Remove mips workarounds for Android.

see
https://android-review.googlesource.com/c/platform/external/skia/+/1252938
for additional context.

Change-Id: I345b5020f81b2193ff92e2704d2050fb5c19a766
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/276917
Reviewed-by: Leon Scroggins <[email protected]>
Commit-Queue: Derek Sollenberger <[email protected]>
Auto-Submit: Derek Sollenberger <[email protected]>

Author: drWulf

gn/gn_to_bp.py

@@ -63,18 +63,6 @@
             ],
         },
 
-        mips: {
-            srcs: [
-                $none_srcs
-            ],
-        },
-
-        mips64: {
-            srcs: [
-                $none_srcs
-            ],
-        },
-
         x86: {
             srcs: [
                 $x86_srcs
@@ -496,7 +484,6 @@ def bpfmt(indent, lst, sort=True):
     'arm_neon_srcs': bpfmt(20, strip_headers(defs['neon'])),
     'arm64_srcs':    bpfmt(16, strip_headers(defs['arm64'] +
                                              defs['crc32'])),
-    'none_srcs':     bpfmt(16, strip_headers(defs['none'])),
     'x86_srcs':      bpfmt(16, strip_headers(defs['sse2'] +
                                              defs['ssse3'] +
                                              defs['sse41'] +