Revert .github/workflows/common.yml changes

Author: andrewheard

.github/workflows/common.yml

@@ -105,12 +105,6 @@ jobs:
       with:
         path: .build
         key: ${{needs.spm-package-resolved.outputs.cache_key}}
-    - name: Disable SwiftPM prebuilts in Xcode
-      run: |
-        defaults write com.apple.dt.Xcode IDEPackageEnablePrebuilts -bool NO
-        defaults read com.apple.dt.Xcode IDEPackageEnablePrebuilts
-    - name: Clear SwiftPM caches
-      run: rm -rf ~/.swiftpm/artifacts ~/.swiftpm/cache
     - name: Xcode
       run: sudo xcode-select -s /Applications/${{ matrix.xcode }}.app/Contents/Developer
     - name: Run setup command, if needed.