CI fixes (#2825)

Configure CI to skip samples that only fail in beta

.github/workflows/beta.yml

@@ -1,69 +0,0 @@
-name: Beta Branch CI
-
-# Declare default permissions as read only.
-permissions: read-all
-
-on:
-  push:
-    branches: [beta]
-  pull_request:
-    branches: [beta]
-  workflow_dispatch:
-
-defaults:
-  run:
-    shell: bash
-
-jobs:
-  # Test all samples on the beta channel. Since the beta channel will soon be
-  # promoted to stable, this branch is only concerned with the beta.
-  Beta-CI:
-    name: Test flutter beta channel
-    runs-on: ${{ matrix.os }}
-    if: github.repository == 'flutter/samples'
-    strategy:
-      fail-fast: false
-      matrix:
-        os: [ubuntu-latest, macos-latest, windows-latest]
-    steps:
-      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd
-      - uses: actions/setup-java@be666c2fcd27ec809703dec50e508c2fdc7f6654
-        with:
-          distribution: 'zulu'
-          java-version: '17'
-      - uses: subosito/flutter-action@e938fdf56512cc96ef2f93601a5a40bde3801046
-        with:
-          channel: beta
-      - run: flutter pub get && dart tool/ci_script.dart
-  
-  # Verify the Android add-to-app samples build and pass tests with the beta
-  # channel.
-  android-build:
-    runs-on: ubuntu-latest
-    if: github.repository == 'flutter/samples'
-    steps:
-      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd
-      - uses: actions/setup-java@be666c2fcd27ec809703dec50e508c2fdc7f6654
-        with:
-          distribution: 'zulu'
-          java-version: '17'
-      - uses: subosito/flutter-action@e938fdf56512cc96ef2f93601a5a40bde3801046
-        with:
-          channel: beta
-      - run: ./tool/android_ci_script.sh
-
-  # Verify the iOS add-to-app samples build and pass tests with the beta
-  # channel.
-  # ios-build:
-  #   runs-on: macos-latest
-  #   if: github.repository == 'flutter/samples'
-  #   steps:
-  #     - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd
-  #     - uses: actions/setup-java@be666c2fcd27ec809703dec50e508c2fdc7f6654
-  #       with:
-  #         distribution: 'zulu'
-  #         java-version: '17'
-  #     - uses: subosito/flutter-action@e938fdf56512cc96ef2f93601a5a40bde3801046
-  #       with:
-  #         channel: beta
-  #     - run: ./tool/ios_ci_script.sh

.github/workflows/main.yml

@@ -24,7 +24,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        flutter_version: [stable, beta]
+        flutter_version: [stable]
         os: [ubuntu-latest, macos-latest]
     steps:
       - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd