Removed duplicate manifest for Visual Studio 2019 BuildTools version 16.8.31005.135. (#13135)

manifests/m/Microsoft/VisualStudio/BuildTools/16.8.31005.135/Microsoft.VisualStudio.BuildTools.yaml

@@ -1,26 +0,0 @@
-PackageIdentifier: Microsoft.VisualStudio.BuildTools
-PackageVersion: 16.8.31005.135
-PackageName: Visual Studio Build Tools
-Publisher: Microsoft
-License: Copyright (c) Microsoft Corporation. All rights reserved.
-LicenseUrl: https://visualstudio.microsoft.com/license-terms/
-Tags:
-- C++
-- tools
-- C#
-- build
-- vs
-ShortDescription: Visual Studio Build Tools
-PackageUrl: https://visualstudio.microsoft.com/
-Installers:
-- Architecture: x64
-  InstallerUrl: https://download.visualstudio.microsoft.com/download/pr/20130c62-1bc8-43d6-b4f0-c20bb7c79113/145a319d79a83376915d8f855605e152ef5f6fa2b2f1d2dca411fb03722eea72/vs_BuildTools.exe
-  InstallerSha256: 145A319D79A83376915D8F855605E152EF5F6FA2B2F1D2DCA411FB03722EEA72
-  InstallerType: exe
-  InstallerSwitches:
-    Silent: --quiet
-    SilentWithProgress: --passive
-    Custom: --productId Microsoft.VisualStudio.Product.BuildTools --channelId VisualStudio.16.Release --channelUri https://aka.ms/vs/16/release/channel
-PackageLocale: en-US
-ManifestType: singleton
-ManifestVersion: 1.0.0