Switch `ios_platform_tests` from Cirrus to LUCI (#6729)

* move to prod

* remove cirrus
diff --git a/.ci.yaml b/.ci.yaml
index 5c2e49d..c77aa42 100644
--- a/.ci.yaml
+++ b/.ci.yaml
@@ -78,7 +78,6 @@
   # https://github.com/flutter/plugins/pull/5693#issuecomment-1126011089
   - name: Mac_x64 ios_platform_tests_1_of_4 master
     recipe: plugins/plugins
-    bringup: true # New target: https://github.com/flutter/plugins/pull/6682
     timeout: 30
     properties:
       add_recipes_cq: "true"
@@ -88,7 +87,6 @@
 
   - name: Mac_x64 ios_platform_tests_2_of_4 master
     recipe: plugins/plugins
-    bringup: true # New target: https://github.com/flutter/plugins/pull/6682
     timeout: 30
     properties:
       add_recipes_cq: "true"
@@ -98,7 +96,6 @@
 
   - name: Mac_x64 ios_platform_tests_3_of_4 master
     recipe: plugins/plugins
-    bringup: true # New target: https://github.com/flutter/plugins/pull/6682
     timeout: 30
     properties:
       add_recipes_cq: "true"
@@ -108,7 +105,6 @@
 
   - name: Mac_x64 ios_platform_tests_4_of_4 master
     recipe: plugins/plugins
-    bringup: true # New target: https://github.com/flutter/plugins/pull/6682
     timeout: 30
     properties:
       add_recipes_cq: "true"
@@ -120,7 +116,6 @@
   - name: Mac_x64 ios_platform_tests_1_of_4 stable
     recipe: plugins/plugins
     presubmit: false
-    bringup: true # New target: https://github.com/flutter/plugins/pull/6682
     timeout: 30
     properties:
       channel: stable
@@ -132,7 +127,6 @@
   - name: Mac_x64 ios_platform_tests_2_of_4 stable
     recipe: plugins/plugins
     presubmit: false
-    bringup: true # New target: https://github.com/flutter/plugins/pull/6682
     timeout: 30
     properties:
       channel: stable
@@ -144,7 +138,6 @@
   - name: Mac_x64 ios_platform_tests_3_of_4 stable
     recipe: plugins/plugins
     presubmit: false
-    bringup: true # New target: https://github.com/flutter/plugins/pull/6682
     timeout: 30
     properties:
       channel: stable
@@ -156,7 +149,6 @@
   - name: Mac_x64 ios_platform_tests_4_of_4 stable
     recipe: plugins/plugins
     presubmit: false
-    bringup: true # New target: https://github.com/flutter/plugins/pull/6682
     timeout: 30
     properties:
       channel: stable
diff --git a/.cirrus.yml b/.cirrus.yml
index 2170855..5f3c5fe 100644
--- a/.cirrus.yml
+++ b/.cirrus.yml
@@ -337,44 +337,3 @@
         - ./script/tool_runner.sh native-test --macos
       drive_script:
         - ./script/tool_runner.sh drive-examples --macos --exclude=script/configs/exclude_integration_macos.yaml
-
-# Intel macOS tasks.
-task:
-  << : *MACOS_INTEL_TEMPLATE
-  << : *FLUTTER_UPGRADE_TEMPLATE
-  matrix:
-    ### iOS tasks ###
-    # TODO(stuartmorgan): Swap this and ios-build_all_plugins once simulator
-    # tests are reliable on the ARM infrastructure. See discussion at
-    # https://github.com/flutter/plugins/pull/5693#issuecomment-1126011089
-    - name: ios-platform_tests
-      # Don't run full platform tests on both channels in pre-submit.
-      skip: $CIRRUS_PR != '' && $CHANNEL == 'stable'
-      env:
-        PATH: $PATH:/usr/local/bin
-        matrix:
-          PACKAGE_SHARDING: "--shardIndex 0 --shardCount 4"
-          PACKAGE_SHARDING: "--shardIndex 1 --shardCount 4"
-          PACKAGE_SHARDING: "--shardIndex 2 --shardCount 4"
-          PACKAGE_SHARDING: "--shardIndex 3 --shardCount 4"
-        matrix:
-          CHANNEL: "master"
-          CHANNEL: "stable"
-        SIMCTL_CHILD_MAPS_API_KEY: ENCRYPTED[596a9f6bca436694625ac50851dc5da6b4d34cba8025f7db5bc9465142e8cd44e15f69e3507787753accebfc4910d550]
-      create_simulator_script:
-        - xcrun simctl list
-        - xcrun simctl create Flutter-iPhone com.apple.CoreSimulator.SimDeviceType.iPhone-11 com.apple.CoreSimulator.SimRuntime.iOS-15-0 | xargs xcrun simctl boot
-      build_script:
-        - ./script/tool_runner.sh build-examples --ios
-      xcode_analyze_script:
-        - ./script/tool_runner.sh xcode-analyze --ios
-      xcode_analyze_deprecation_script:
-        # Ensure we don't accidentally introduce deprecated code.
-        - ./script/tool_runner.sh xcode-analyze --ios --ios-min-version=13.0
-      native_test_script:
-        - ./script/tool_runner.sh native-test --ios --ios-destination "platform=iOS Simulator,name=iPhone 11,OS=latest"
-      drive_script:
-        # `drive-examples` contains integration tests, which changes the UI of the application.
-        # This UI change sometimes affects `xctest`.
-        # So we run `drive-examples` after `native-test`; changing the order will result ci failure.
-        - ./script/tool_runner.sh drive-examples --ios --exclude=script/configs/exclude_integration_ios.yaml