Removed duplicate manifest for Visual Studio 2019 TestAgent version 16.9.31112.23. (#13243)

manifests/m/Microsoft/VisualStudio/TestAgent/16.9.31112.23/Microsoft.VisualStudio.TestAgent.yaml

@@ -1,26 +0,0 @@
-PackageIdentifier: Microsoft.VisualStudio.TestAgent
-PackageVersion: 16.9.31112.23
-PackageName: Visual Studio Test Agent
-Publisher: Microsoft Corporation
-PackageUrl: https://visualstudio.microsoft.com/
-License: Copyright (c) Microsoft Corporation. All rights reserved.
-LicenseUrl: https://visualstudio.microsoft.com/license-terms/
-Moniker: vs-testagent
-Tags:
-- C++
-- vs
-- C#
-- testagent
-Installers:
-- Architecture: x64
-  InstallerType: exe
-  InstallerUrl: https://download.visualstudio.microsoft.com/download/pr/1192d0de-5c6d-4274-b64d-c387185e4f45/7ae9ee76cd9f652d4745767f78940a2123f176c84e8da7decf177dcc3c9f8bf6/vs_TestAgent.exe
-  InstallerSha256: 7AE9EE76CD9F652D4745767F78940A2123F176C84E8DA7DECF177DCC3C9F8BF6
-  InstallerSwitches:
-    Silent: --quiet
-    SilentWithProgress: --passive
-    Custom: --wait --productId Microsoft.VisualStudio.Product.TestAgent --channelId VisualStudio.16.Release --channelUri https://aka.ms/vs/16/release/channel --add Microsoft.VisualStudio.Workload.Universal
-ShortDescription: Microsoft.VisualStudio.TestAgent
-PackageLocale: en-US
-ManifestType: singleton
-ManifestVersion: 1.0.0