Undo non-working visionOS CI (#12037)

Author: paulb777

.github/workflows/core.yml

@@ -42,16 +42,13 @@ jobs:
     if: (github.repository == 'Firebase/firebase-ios-sdk' && github.event_name == 'schedule') || github.event_name == 'pull_request'
     strategy:
       matrix:
-        target: [iOS, tvOS, macOS, catalyst, watchOS, visionOS]
+        target: [iOS, tvOS, macOS, catalyst, watchOS]
         os: [macos-12, macos-13]
         include:
           - os: macos-12
             xcode: Xcode_14.2
           - os: macos-13
             xcode: Xcode_15.0.1
-        exclude:
-          - os: macos-12
-            target: visionOS
     runs-on: ${{ matrix.os }}
     steps:
     - uses: actions/checkout@v3

.github/workflows/messaging.yml

@@ -82,16 +82,13 @@ jobs:
     if: (github.repository == 'Firebase/firebase-ios-sdk' && github.event_name == 'schedule') || github.event_name == 'pull_request'
     strategy:
       matrix:
-        target: [iOS, watchOS, tvOS, macOS, catalyst, visionOS]
+        target: [iOS, watchOS, tvOS, macOS, catalyst]
         os: [macos-12, macos-13]
         include:
           - os: macos-12
             xcode: Xcode_14.2
           - os: macos-13
             xcode: Xcode_15.0.1
-        exclude:
-          - os: macos-12
-            target: visionOS
     runs-on: ${{ matrix.os }}
     steps:
     - uses: actions/checkout@v3

.github/workflows/storage.yml

@@ -194,16 +194,13 @@ jobs:
     if: github.event_name == 'schedule' && github.repository == 'Firebase/firebase-ios-sdk'
     strategy:
       matrix:
-        target: [ios, tvos, macos, watchos, visionOS]
+        target: [ios, tvos, macos, watchos]
         os: [macos-12, macos-13]
         include:
           - os: macos-12
             xcode: Xcode_14.2
           - os: macos-13
             xcode: xcode_15.0.1
-        exclude:
-          - os: macos-12
-            target: visionOS
     runs-on: ${{ matrix.os }}
     needs: pod-lib-lint
     steps: