[build] Remove broken 'Windows > Tests > Debugging' CI lane (#11109)

The Android emulator on Windows CI agents has been unable to start
since at least March 21, 2026, consistently failing with:

  [Vulkan Loader] ERROR | DRIVER: windows_read_data_files_in_registry:
  Registry lookup failed to get ICD manifest files.
  Possibly missing Vulkan driver?

Because the pipeline treats this as 'succeededWithIssues' rather than
a hard failure, the lane has been silently broken — zero DebuggingTest
tests have actually run in at least 4 weeks. Remove the lane entirely
for now.

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

Author: jonathanpeppers

build-tools/automation/yaml-templates/stage-msbuild-emulator-tests.yaml

@@ -157,58 +157,4 @@ stages:
       parameters:
         condition: ${{ parameters.shouldFailOnIssue }}
 
-  - job: debug_windows_tests
-    displayName: Windows > Tests > Debugging
-    timeoutInMinutes: 180
-    pool:
-      name: Android-1ESPT
-      image: $(WindowsPoolImage1ESPT)
-      os: windows
-    workspace:
-      clean: all
-    steps:
-    - template: /build-tools/automation/yaml-templates/setup-test-environment.yaml
-      parameters:
-        installTestSlicer: true
-        installApkDiff: false
-        xaSourcePath: ${{ parameters.xaSourcePath }}
-        repositoryAlias: ${{ parameters.repositoryAlias }}
-        commit: ${{ parameters.commit }}
-        xaprepareScenario: EmulatorTestDependencies
-        use1ESTemplate: ${{ parameters.use1ESTemplate }}
-
-    - task: DownloadPipelineArtifact@2
-      inputs:
-        artifactName: $(TestAssembliesArtifactName)
-        downloadPath: ${{ parameters.xaSourcePath }}/bin/Test$(XA.Build.Configuration)
-
-    - template: /build-tools/automation/yaml-templates/start-stop-emulator.yaml
-      parameters:
-        xaSourcePath: ${{ parameters.xaSourcePath }}
-        startContinueOnError: true
-
-    - template: /build-tools/automation/yaml-templates/run-sliced-nunit-tests.yaml
-      parameters:
-        testAssembly: $(System.DefaultWorkingDirectory)\bin\Test$(XA.Build.Configuration)\MSBuildDeviceIntegration\$(DotNetStableTargetFramework)\MSBuildDeviceIntegration.dll
-        testFilter: name == DebuggingTest
-        testRunTitle: DebuggingTest tests on Windows
-        condition: and(succeeded(), eq(variables['EMULATOR_STARTED'], 'true'))
-
-    - ${{ if ne(parameters.usesCleanImages, true) }}:
-      - template: /build-tools/automation/yaml-templates/start-stop-emulator.yaml
-        parameters:
-          command: stop
-          xaSourcePath: ${{ parameters.xaSourcePath }}
-
-    - template: /build-tools/automation/yaml-templates/upload-results.yaml
-      parameters:
-        configuration: $(XA.Build.Configuration)
-        artifactName: Test Results - Emulator Debugging - Windows-$(System.JobPositionInPhase)
-        xaSourcePath: ${{ parameters.xaSourcePath }}
-        use1ESTemplate: ${{ parameters.use1ESTemplate }}
 
-    # Only fail on issues if the emulator started successfully
-    # If the emulator failed to start on Windows, we skip tests and don't fail the job
-    - template: /build-tools/automation/yaml-templates/fail-on-issue.yaml
-      parameters:
-        condition: and(${{ parameters.shouldFailOnIssue }}, eq(variables['EMULATOR_STARTED'], 'true'))