Revert "Enable hosted builds on arm64 (dotnet#7696)"

This reverts commit 4b82b1e.

The changes break VS and may even change the default on Windows to x86
instead of x64.

Directory.Build.props

@@ -94,8 +94,7 @@
   </PropertyGroup>
 
   <PropertyGroup>
-    <HostArch>$([System.Runtime.InteropServices.RuntimeInformation]::ProcessArchitecture.ToString().ToLowerInvariant())</HostArch>
-    <TargetArchitecture Condition="'$(TargetArchitecture)' == ''">$(HostArch)</TargetArchitecture>
+    <TargetArchitecture  Condition="'$(TargetArchitecture)' == ''">x64</TargetArchitecture>
     <Platform Condition="'$(Platform)'==''">$(TargetArchitecture)</Platform>
   </PropertyGroup>
   <!--
@@ -399,4 +398,4 @@
     <DisableImplicitNuGetFallbackFolder>true</DisableImplicitNuGetFallbackFolder>
   </PropertyGroup>
 
-</Project>
+</Project>

eng/Versions.props

@@ -86,7 +86,7 @@
     <MicrosoftTargetingPackPrivateWinRTPackageVersion>1.0.5</MicrosoftTargetingPackPrivateWinRTPackageVersion>
     <MicrosoftDiaSymReaderNativePackageVersion>1.7.0</MicrosoftDiaSymReaderNativePackageVersion>
     <!-- Infrastructure and test-only. -->
-    <MicrosoftSourceLinkVersion>1.0.0-beta2-19367-01</MicrosoftSourceLinkVersion>
+    <MicrosoftSourceLinkVersion>1.0.0-beta2-18618-05</MicrosoftSourceLinkVersion>
   </PropertyGroup>
   <!--Package names-->
   <PropertyGroup>

src/pkg/packaging-tools/framework.dependency.targets

@@ -217,8 +217,7 @@
     <PropertyGroup>
       <_crossDir Condition="'$(TargetArchitecture)' == 'arm' AND '$(OS)' == 'Windows_NT'">/x86_arm</_crossDir>
       <_crossDir Condition="'$(TargetArchitecture)' == 'arm' AND '$(OS)' != 'Windows_NT'">/x64_arm</_crossDir>
-      <!-- Only use x64_arm64 when cross compiling. Use normal executible when compiling on arm64 itself. -->
-      <_crossDir Condition="'$(TargetArchitecture)' == 'arm64' AND '$(HostArch)' != 'arm64'">/x64_arm64</_crossDir>
+      <_crossDir Condition="'$(TargetArchitecture)' == 'arm64'">/x64_arm64</_crossDir>
     </PropertyGroup>
 
     <ItemGroup>
@@ -236,6 +235,7 @@
       <!-- Find crossgen tool assets in package cache to allow ExcludeAssets=All. -->
       <_runtimeCLR Include="$(_runtimePackageDir)**/$(LibraryFilePrefix)coreclr$(LibraryFileExtension)" />
       <_runtimeCoreLib Include="$(_runtimePackageDir)**/native/System.Private.CoreLib.dll" />
+      <_runtimeJIT Include="$(_jitPackageDir)**/$(LibraryFilePrefix)clrjit$(LibraryFileExtension)" />
       <_fxSystemRuntime Include="$(_corefxPackageDir)**/System.Runtime.dll" />
       <_windowsWinMD Include="$(_winmdPackageDir)**/Windows.winmd" />
       <_diaSymReaderAssembly Include="$(_diaSymReaderPackageDir)**\Microsoft.DiaSymReader.Native.*.dll" />
@@ -250,8 +250,8 @@
       <_coreLibDirectory>%(_runtimeCoreLib.RootDir)%(_runtimeCoreLib.Directory)</_coreLibDirectory>
     </PropertyGroup>
 
-    <PropertyGroup>
-      <_jitPath Condition="'$(_crossDir)' == ''">$(_jitPackageDir)runtimes/$(PackageRID)/native/$(LibraryFilePrefix)clrjit$(LibraryFileExtension)</_jitPath>
+    <PropertyGroup Condition="'@(_runtimeJIT)' != ''">
+      <_jitPath>%(_runtimeJIT.FullPath)</_jitPath>
       <_jitPath Condition="'$(_crossDir)' != ''">$(_jitPackageDir)runtimes$(_crossDir)/native/$(LibraryFilePrefix)clrjit$(LibraryFileExtension)</_jitPath>
     </PropertyGroup>