Revert "Enable testing on both master and stable (#2197)" (#2199)

This reverts commit c155379.

.cirrus.yml

@@ -12,38 +12,25 @@ task:
   matrix:
     - name: publishable
       script: ./script/check_publish.sh
-    - name: format
+    - name: test+format
       install_script:
         - wget -O - https://apt.llvm.org/llvm-snapshot.gpg.key | sudo apt-key add -
         - sudo apt-add-repository "deb http://apt.llvm.org/xenial/ llvm-toolchain-xenial-7 main"
         - sudo apt-get update
         - sudo apt-get install -y --allow-unauthenticated clang-format-7
       format_script: ./script/incremental_build.sh format --travis --clang-format=clang-format-7
-    - name: test
-      env:
-        matrix:
-          CHANNEL: "master"
-          CHANNEL: "stable"
-      test_script:
-        - flutter channel $CHANNEL
-        - ./script/incremental_build.sh test
+      test_script: ./script/incremental_build.sh test
     - name: analyze
       script: ./script/incremental_build.sh analyze
     - name: build_all_plugins_apk
-      # TODO(jackson): This is timing out on stable but should be run on stable once it passes.
-      # https://github.com/flutter/flutter/issues/42810
       script: ./script/build_all_plugins_app.sh apk
     - name: build-apks+java-test+drive-examples
       env:
         matrix:
           PLUGIN_SHARDING: "--shardIndex 0 --shardCount 2"
           PLUGIN_SHARDING: "--shardIndex 1 --shardCount 2"
-        matrix:
-          CHANNEL: "master"
-          CHANNEL: "stable"
         MAPS_API_KEY: ENCRYPTED[596a9f6bca436694625ac50851dc5da6b4d34cba8025f7db5bc9465142e8cd44e15f69e3507787753accebfc4910d550]
       script:
-        - flutter channel $CHANNEL
         # Unsetting CIRRUS_CHANGE_MESSAGE and CIRRUS_COMMIT_MESSAGE as they
         # might include non-ASCII characters which makes Gradle crash.
         # See: https://github.com/flutter/flutter/issues/24935
@@ -75,8 +62,6 @@ task:
     - xcrun simctl list
     - xcrun simctl create Flutter-iPhone com.apple.CoreSimulator.SimDeviceType.iPhone-X com.apple.CoreSimulator.SimRuntime.iOS-12-2 | xargs xcrun simctl boot
   matrix:
-    # TODO(jackson): This is timing out on stable but should be run on stable once it passes.
-    # https://github.com/flutter/flutter/issues/42810
     - name: build_all_plugins_ipa
       script: ./script/build_all_plugins_app.sh ios --no-codesign
     - name: lint_darwin_plugins
@@ -89,11 +74,7 @@ task:
           PLUGIN_SHARDING: "--shardIndex 1 --shardCount 4"
           PLUGIN_SHARDING: "--shardIndex 2 --shardCount 4"
           PLUGIN_SHARDING: "--shardIndex 3 --shardCount 4"
-        matrix:
-          CHANNEL: "master"
-          CHANNEL: "stable"
         SIMCTL_CHILD_MAPS_API_KEY: ENCRYPTED[596a9f6bca436694625ac50851dc5da6b4d34cba8025f7db5bc9465142e8cd44e15f69e3507787753accebfc4910d550]
       build_script:
-        - flutter channel $CHANNEL
         - ./script/incremental_build.sh build-examples --ipa
         - ./script/incremental_build.sh drive-examples