ci: Remove local dart dependency in flutter CI jobs (#831)

Author: mtrezza

.github/workflows/ci.yml

@@ -46,12 +46,10 @@ jobs:
         uses: subosito/flutter-action@v2
         with:
           cache: true
-      - name: Set file permissions
-        run: chmod +x tools/flutter-dependencies.sh
       - name: Install dependencies
         run: |
-          echo "publish_to: none" >> packages/flutter/pubspec.yaml
-          tools/flutter-dependencies.sh
+          (cd packages/dart; flutter pub get)
+          (cd packages/flutter; flutter pub get)
       - name: Analyze code
         run: flutter analyze packages/flutter --no-fatal-infos
   check-code-analysis-dart:
@@ -81,15 +79,6 @@ jobs:
         uses: subosito/flutter-action@v2
         with:
           cache: true
-      - name: Set file permissions on Ubuntu and MacOS
-        if: matrix.os == 'ubuntu-latest' || matrix.os == 'macos-latest'
-        run: chmod +x tools/flutter-dependencies.sh
-      - name: Install dependencies on Ubuntu and MacOS
-        if: matrix.os == 'ubuntu-latest' || matrix.os == 'macos-latest'
-        run: tools/flutter-dependencies.sh
-      - name: Install dependencies on Windows
-        if: matrix.os == 'windows-latest'
-        run: tools/flutter-dependencies.bat        
       - name: Run tests
         run: (cd packages/flutter && flutter test --coverage)
       - name: Convert code coverage