Remove DXC.Release pipeline (#5073)

It has been replaced by internal build pipeline that also includes dxil.dll.

azure-pipelines/DXC.Release.yml

@@ -1,44 +0,0 @@
-# -----------------------------------------------------------------------------
-# ShaderCompiler DXC Release Pipeline Entry Point
-# -----------------------------------------------------------------------------
-
-name: DXC.Release.$(date:yyMMdd).$(rev:rr).$(Build.SourceBranchName)
-
-trigger: none
-
-parameters:
-- name: BuildConfigurations
-  type: object
-  default: [Release, Debug]
-  displayName: Windows Build Configurations
-
-- name: BuildPlatforms
-  type: object
-  default: [x64, x86, arm64]
-  displayName: Windows Build Platforms
-
-- name: LinuxBuildConfigurations
-  type: object
-  default: [Release, Debug]
-  displayName: Linux Build Configurations
-
-- name: LinuxBuildPlatforms
-  type: object
-  default: [x64]
-  displayName: Linux Build Platforms
-
-resources:
-  repositories:
-    - repository: XboxDXC
-      type: git
-      name: Xbox/Xbox.ShaderCompiler.DXC
-      ref: refs/heads/Xbox
-
-extends:
-  template: azure-pipelines\templates\DXC.Release.template.yml@XboxDXC
-  parameters:
-    BuildConfigurations: ${{parameters.BuildConfigurations}}
-    BuildPlatforms: ${{parameters.BuildPlatforms}}
-    LinuxBuildConfigurations: ${{parameters.LinuxBuildConfigurations}}
-    LinuxBuildPlatforms: ${{parameters.LinuxBuildPlatforms}}
-    StatusEmail: $(StatusEmail)