[Infra] Remove dupe job in .github/workflows/core.yml (#14905)

Author: ncooke3

.github/workflows/core.yml

@@ -37,31 +37,6 @@ jobs:
     with:
       product: FirebaseCore
 
-  spm-package-resolved:
-    env:
-      FIREBASECI_USE_LATEST_GOOGLEAPPMEASUREMENT: 1
-    runs-on: macos-15
-    outputs:
-      cache_key: ${{ steps.generate_cache_key.outputs.cache_key }}
-    steps:
-      - uses: actions/checkout@v4
-      - name: Xcode
-        run: sudo xcode-select -s /Applications/Xcode_16.2.app/Contents/Developer
-      - name: Generate Swift Package.resolved
-        id: swift_package_resolve
-        run: |
-          swift package resolve
-      - name: Generate cache key
-        id: generate_cache_key
-        run: |
-          cache_key="${{ runner.os }}-spm-${{ hashFiles('**/Package.resolved') }}"
-          echo "cache_key=${cache_key}" >> "$GITHUB_OUTPUT"
-      - uses: actions/cache/save@v4
-        id: cache
-        with:
-          path: .build
-          key: ${{ steps.generate_cache_key.outputs.cache_key }}
-
   core-cron-only:
     # Don't run on private repo.
     if: github.event_name == 'schedule' && github.repository == 'Firebase/firebase-ios-sdk'