Don't pin package:macros (#148087)

Full context flutter/flutter#148004

TL;DR

1. Because `package:macros` depends on `package:_macros` via [a Dart SDK
dependency](https://github.com/dart-lang/sdk/blob/main/pkg/macros/pubspec.yaml#L13);
and
2. `package:macros` exactly pins `package:_macros`; and
3. Each new version of `package:macros` will increment its exact pin of
`package:_macros`
([comment](flutter/flutter#148004 (comment)));
and
4. The [flutter/flutter](https://github.com/flutter/flutter) repository
exactly pins the Dart SDK (via its exact pin on the
[flutter/engine](https://github.com/flutter/engine) repository

Therefore, the [flutter/flutter](https://github.com/flutter/flutter)
repository effectively pins both `package:macros` and `package:_macros`
already (as in, there exists only a single version of each that pub will
successfully be able to solve within the context of a particular Flutter
SDK).

Therefore, it is safe for
[flutter/flutter](https://github.com/flutter/flutter) repository to
*not* pin `package:macros`, which will allow engine -> framework rolls
that contain a new Dart SDK that contains a new `package:_macros`
version to land automatically, provided all tests pass.

Author: christopherfujino

dev/automated_tests/pubspec.yaml

@@ -38,7 +38,6 @@ dependencies:
   leak_tracker_flutter_testing: 3.0.5 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade"
   leak_tracker_testing: 3.0.1 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade"
   logging: 1.2.0 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade"
-  macros: 0.1.0-main.3 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade"
   matcher: 0.12.16+1 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade"
   material_color_utilities: 0.11.1 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade"
   meta: 1.14.0 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade"
@@ -76,4 +75,4 @@ flutter:
   assets:
     - icon/test.png
 
-# PUBSPEC CHECKSUM: 0d21
+# PUBSPEC CHECKSUM: 461c

dev/benchmarks/complex_layout/pubspec.yaml

@@ -61,7 +61,6 @@ dev_dependencies:
   leak_tracker_flutter_testing: 3.0.5 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade"
   leak_tracker_testing: 3.0.1 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade"
   logging: 1.2.0 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade"
-  macros: 0.1.0-main.3 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade"
   mime: 1.0.5 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade"
   node_preamble: 2.0.2 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade"
   package_config: 2.1.0 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade"
@@ -87,4 +86,4 @@ flutter:
     - packages/flutter_gallery_assets/people/square/ali.png
     - packages/flutter_gallery_assets/places/india_chettinad_silk_maker.png
 
-# PUBSPEC CHECKSUM: a6f9
+# PUBSPEC CHECKSUM: 99f4

dev/benchmarks/macrobenchmarks/pubspec.yaml

@@ -63,7 +63,6 @@ dev_dependencies:
   io: 1.0.4 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade"
   js: 0.7.1 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade"
   logging: 1.2.0 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade"
-  macros: 0.1.0-main.3 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade"
   mime: 1.0.5 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade"
   node_preamble: 2.0.2 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade"
   package_config: 2.1.0 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade"
@@ -214,4 +213,4 @@ flutter:
       fonts:
         - asset: packages/flutter_gallery_assets/fonts/GalleryIcons.ttf
 
-# PUBSPEC CHECKSUM: a6f9
+# PUBSPEC CHECKSUM: 99f4

dev/benchmarks/microbenchmarks/pubspec.yaml

@@ -41,7 +41,6 @@ dependencies:
   leak_tracker_flutter_testing: 3.0.5 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade"
   leak_tracker_testing: 3.0.1 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade"
   logging: 1.2.0 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade"
-  macros: 0.1.0-main.3 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade"
   matcher: 0.12.16+1 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade"
   material_color_utilities: 0.11.1 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade"
   mime: 1.0.5 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade"
@@ -141,4 +140,4 @@ flutter:
     - packages/flutter_gallery_assets/people/square/stella.png
     - packages/flutter_gallery_assets/people/square/trevor.png
 
-# PUBSPEC CHECKSUM: 0a70
+# PUBSPEC CHECKSUM: c06b

dev/benchmarks/platform_channels_benchmarks/pubspec.yaml

@@ -40,7 +40,6 @@ dependencies:
   leak_tracker_flutter_testing: 3.0.5 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade"
   leak_tracker_testing: 3.0.1 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade"
   logging: 1.2.0 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade"
-  macros: 0.1.0-main.3 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade"
   matcher: 0.12.16+1 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade"
   material_color_utilities: 0.11.1 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade"
   meta: 1.14.0 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade"
@@ -78,4 +77,4 @@ dev_dependencies:
 flutter:
   uses-material-design: true
 
-# PUBSPEC CHECKSUM: 905e
+# PUBSPEC CHECKSUM: 1a59

dev/benchmarks/platform_views_layout/pubspec.yaml

@@ -64,7 +64,6 @@ dev_dependencies:
   leak_tracker_flutter_testing: 3.0.5 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade"
   leak_tracker_testing: 3.0.1 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade"
   logging: 1.2.0 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade"
-  macros: 0.1.0-main.3 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade"
   mime: 1.0.5 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade"
   node_preamble: 2.0.2 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade"
   package_config: 2.1.0 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade"
@@ -90,4 +89,4 @@ flutter:
     - packages/flutter_gallery_assets/people/square/ali.png
     - packages/flutter_gallery_assets/places/india_chettinad_silk_maker.png
 
-# PUBSPEC CHECKSUM: efb5
+# PUBSPEC CHECKSUM: bab0

dev/benchmarks/platform_views_layout_hybrid_composition/pubspec.yaml

@@ -59,7 +59,6 @@ dev_dependencies:
   leak_tracker_flutter_testing: 3.0.5 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade"
   leak_tracker_testing: 3.0.1 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade"
   logging: 1.2.0 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade"
-  macros: 0.1.0-main.3 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade"
   mime: 1.0.5 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade"
   node_preamble: 2.0.2 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade"
   package_config: 2.1.0 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade"
@@ -85,4 +84,4 @@ flutter:
     - packages/flutter_gallery_assets/people/square/ali.png
     - packages/flutter_gallery_assets/places/india_chettinad_silk_maker.png
 
-# PUBSPEC CHECKSUM: a6f9
+# PUBSPEC CHECKSUM: 99f4

dev/benchmarks/test_apps/stocks/pubspec.yaml

@@ -51,7 +51,6 @@ dev_dependencies:
   leak_tracker_flutter_testing: 3.0.5 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade"
   leak_tracker_testing: 3.0.1 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade"
   logging: 1.2.0 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade"
-  macros: 0.1.0-main.3 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade"
   matcher: 0.12.16+1 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade"
   mime: 1.0.5 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade"
   node_preamble: 2.0.2 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade"
@@ -80,4 +79,4 @@ dev_dependencies:
 flutter:
   uses-material-design: true
 
-# PUBSPEC CHECKSUM: c31c
+# PUBSPEC CHECKSUM: 6117

dev/bots/pubspec.yaml

@@ -40,7 +40,6 @@ dependencies:
   js: 0.7.1 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade"
   json_annotation: 4.9.0 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade"
   logging: 1.2.0 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade"
-  macros: 0.1.0-main.3 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade"
   matcher: 0.12.16+1 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade"
   metrics_center: 1.0.13 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade"
   mime: 1.0.5 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade"
@@ -76,4 +75,4 @@ dependencies:
 dev_dependencies:
   test_api: 0.7.1
 
-# PUBSPEC CHECKSUM: 5010
+# PUBSPEC CHECKSUM: 4d0b

dev/conductor/core/pubspec.yaml

@@ -44,7 +44,6 @@ dev_dependencies:
   io: 1.0.4 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade"
   js: 0.7.1 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade"
   logging: 1.2.0 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade"
-  macros: 0.1.0-main.3 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade"
   matcher: 0.12.16+1 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade"
   mime: 1.0.5 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade"
   node_preamble: 2.0.2 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade"
@@ -67,4 +66,4 @@ dev_dependencies:
   webkit_inspection_protocol: 1.2.1 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade"
   yaml: 3.1.2 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade"
 
-# PUBSPEC CHECKSUM: 8e1e
+# PUBSPEC CHECKSUM: 4a19