[deps] Stop moving NDK folder inside Android SDK (#47454)

One step in the direction of addressing

* flutter/flutter#136666

I can't actually upload the packages: ` Instance registration failed: "user:[email protected]" has no required WRITER role in prefix`. I have verified locally that the directory structure is as expected by preventing the tmp folder from being deleted and browsing inside it.

Old structure:

* `sdk/`
* `ndk/`

New structure

* `sdk/ndk/22.xxxx/`

This PR does not yet update any of the DEPS anywhere yet, so we will need to do that after uploading new packages.

Edit: new CIPD packages uploaded with: `~/flt/engine/src/flutter/tools/android_sdk$ ./create_cipd_packages.sh 33v6transitional2` (The script does now allow underscores in the tag.)

[C++, Objective-C, Java style guides]: https://github.com/flutter/engine/blob/main/CONTRIBUTING.md#style

Author: dcharkes

tools/android_sdk/create_cipd_packages.sh

@@ -115,13 +115,6 @@ for platform in "${platforms[@]}"; do
     done
   done
 
-  # Special treatment for NDK to move to expected directory.
-  mv $upload_dir/sdk/ndk $upload_dir/ndk-bundle
-  ndk_sub_paths=`find $upload_dir/ndk-bundle -maxdepth 1 -type d`
-  ndk_sub_paths_arr=($ndk_sub_paths)
-  mv ${ndk_sub_paths_arr[1]} $upload_dir/ndk
-  rm -rf $upload_dir/ndk-bundle
-
   # Accept all licenses to ensure they are generated and uploaded.
   yes "y" | $sdkmanager_path --licenses --sdk_root=$sdk_root
   cp -r "$sdk_root/licenses" "$upload_dir/sdk"