Try a more brute-force approach to removing GCC

.github/workflows/lsp-tests.yml

@@ -31,7 +31,7 @@ jobs:
         run: sudo apt-get remove clang-*
         if: ${{ runner.os == 'Linux' }}
       - name: Uninstall packages MacOS
-        run: brew uninstall --ignore-dependencies gcc
+        run: sudo rm -f $(which gcc)
         if: ${{ runner.os == 'macOS' }}
       - name: Uninstall packages Windows
         shell: pwsh
@@ -68,7 +68,7 @@ jobs:
       - name: Setup Python
         uses: actions/setup-python@v4
         with:
-          python-version: '3.10'
+          python-version: "3.10"
       - name: Run language server Python tests without PyLint
         run: ./gradlew core:integrationTest --tests org.lflang.tests.lsp.LspTests.pythonValidationTestSyntaxOnly core:integrationTestCodeCoverageReport
       - name: Install pylint