Stop restoring SPM cache

Author: andrewheard

.github/workflows/common.yml

@@ -101,10 +101,6 @@ jobs:
     runs-on: ${{ matrix.os }}
     steps:
     - uses: actions/checkout@v4
-    - uses: actions/cache/restore@v4
-      with:
-        path: .build
-        key: ${{needs.spm-package-resolved.outputs.cache_key}}
     - name: Xcode
       run: sudo xcode-select -s /Applications/${{ matrix.xcode }}.app/Contents/Developer
     - name: Run setup command, if needed.