Delete redundant ARM tests

PiperOrigin-RevId: 836244136

Author: ericsalo

.github/workflows/test_cpp.yml

@@ -418,10 +418,6 @@ jobs:
             os: macos-14
             cache_key: macos-14-bazel8
             bazel: test //src/... //third_party/utf8_range/... //conformance:conformance_framework_tests
-          - name: MacOS Apple Silicon Bazel
-            os: macos-14
-            cache_key: macos-14-arm
-            bazel: test --cpu=darwin_arm64 //src/... //third_party/utf8_range/... //conformance:conformance_framework_tests
           - name: MacOS Intel Bazel
             os: macos-14
             cache_key: macos-14-intel

.github/workflows/test_upb.yml

@@ -102,7 +102,6 @@ jobs:
       matrix:
         config:
           - { name: "macOS", bazel-command: "test" }
-          - { name: "macOS ARM", bazel-command: "test", flags: "--cpu=darwin_arm64" }
           - { name: "macOS Intel", bazel-command: "test", flags: "--cpu=darwin_x86_64" }
     name: ${{ matrix.config.name }}
     runs-on: macos-14