Remove workaround for dart-lang/setup-dart#59 (#1904)

Author: nex3

.github/workflows/ci.yml

@@ -332,20 +332,14 @@ jobs:
         include:
           - runner: macos-latest
             platform: macos-x64
-            architecture: x64
           - runner: self-hosted
             platform: macos-arm64
-            architecture: arm64
           - runner: windows-latest
             platform: windows
-            architecture: x64
 
     steps:
       - uses: actions/checkout@v3
       - uses: dart-lang/setup-dart@v1
-        # Workaround for dart-lang/setup-dart#59
-        with:
-          architecture: ${{ matrix.architecture }}
       - run: dart pub get
       - name: Deploy
         run: dart run grinder pkg-github-${{ matrix.platform }}