Remove aspnetcore patch that was backported

src/SourceBuild/tarball/patches/aspnetcore/0005-Always-build-App.Ref-and-the-targeting-packs.patch

@@ -1,32 +0,0 @@
-From c5211f8557f2fb019416cf1f6c01142965270479 Mon Sep 17 00:00:00 2001
-From: Doug Bunting <6431421+dougbu@users.noreply.github.com>
-Date: Sun, 16 Jan 2022 22:55:10 -0800
-Subject: [PATCH] Always build App.Ref and the targeting packs - set
- `$(IsTargetingPackBuilding)` to `true` unconditionally - leave all _use_ of
- `$(IsTargetingPackBuilding)`
-
-See https://github.com/dotnet/aspnetcore/issues/39471 for details and backporting.
----
- Directory.Build.props | 6 +-----
- 1 file changed, 1 insertion(+), 5 deletions(-)
-
-diff --git a/Directory.Build.props b/Directory.Build.props
-index e100d883e9..d71b308905 100644
---- a/Directory.Build.props
-+++ b/Directory.Build.props
-@@ -138,11 +138,7 @@
-     <TargetingPackName>Microsoft.AspNetCore.App.Ref</TargetingPackName>
-     <RuntimeInstallerBaseName>aspnetcore-runtime</RuntimeInstallerBaseName>
-     <TargetingPackInstallerBaseName>aspnetcore-targeting-pack</TargetingPackInstallerBaseName>
--
--    <!-- This is used to produce targeting pack installers/packages once per major.minor, or when we need to service it (e.g. 6.0.2) -->
--    <IsTargetingPackBuilding
--        Condition=" '$(IsTargetingPackBuilding)' == '' AND '$(AspNetCorePatchVersion)' != '2' ">false</IsTargetingPackBuilding>
--    <IsTargetingPackBuilding Condition=" '$(IsTargetingPackBuilding)' == '' ">true</IsTargetingPackBuilding>
-+    <IsTargetingPackBuilding>true</IsTargetingPackBuilding>
- 
-     <!--
-       Archives and installers using this prefix are intended for internal use only.
--- 
-2.28.0.windows.1
-