Remove cache in CI

Author: Yozhef

.github/workflows/ci.yaml

@@ -44,11 +44,6 @@ jobs:
             - name: Checkout
               uses: actions/checkout@v2
 
-            - uses: actions/cache@v2
-              with:
-                  path: ~/.composer/cache/files
-                  key: ${{ matrix.php }}-${{ matrix.symfony-versions }}
-
             - name: Setup PHP
               uses: shivammathur/setup-php@v2
               with:
@@ -58,17 +53,6 @@ jobs:
             - name: Add PHPUnit matcher
               run: echo "::add-matcher::${{ runner.tool_cache }}/phpunit.json"
 
-            - name: Set composer cache directory
-              id: composer-cache
-              run: echo "::set-output name=dir::$(composer config cache-files-dir)"
-
-            - name: Cache composer
-              uses: actions/[email protected]
-              with:
-                  path: ${{ steps.composer-cache.outputs.dir }}
-                  key: ${{ runner.os }}-${{ matrix.php }}-${{ matrix.symfony-versions }}-composer-${{ hashFiles('composer.json') }}
-                  restore-keys: ${{ runner.os }}-${{ matrix.php }}-${{ matrix.symfony-versions }}-composer
-
             - name: Update Symfony version
               if: matrix.symfony-versions != ''
               run: |