Move pure Dart package dependency caches

.github/workflows/ci.yml

@@ -21,13 +21,6 @@ jobs:
       - name: Check out code
         uses: actions/checkout@v2
 
-      - name: Cache dependencies
-        uses: actions/cache@v2
-        with:
-          path: /usr/lib/dart/bin:/root/.pub-cache
-          key: ${{ runner.os }}-pub-${{ hashFiles('**/pubspec.lock') }}
-          restore-keys: ${{ runner.os }}-pub-
-
       - name: Install dependencies
         working-directory: floor_annotation
         run: pub get
@@ -51,13 +44,6 @@ jobs:
       - name: Check out code
         uses: actions/checkout@v2
 
-      - name: Cache dependencies
-        uses: actions/cache@v2
-        with:
-          path: /usr/lib/dart/bin:/root/.pub-cache
-          key: ${{ runner.os }}-pub-${{ hashFiles('**/pubspec.lock') }}
-          restore-keys: ${{ runner.os }}-pub-
-
       - name: Install dependencies
         working-directory: floor_generator
         run: pub get