remove source link package reference not necessary

Author: WeihanLi

Directory.Packages.props

@@ -23,7 +23,6 @@
 	</ItemGroup>
 
 	<ItemGroup Label="Package Versioning">
-		<PackageVersion Include="Microsoft.SourceLink.GitHub" Version="8.0.0" />
 		<PackageVersion Include="Nerdbank.GitVersioning" Version="3.6.146" />
 	</ItemGroup>
 

src/Directory.Build.props

@@ -60,10 +60,6 @@ See the full changelog at https://github.com/bUnit-dev/bUnit/releases
 	</ItemGroup>
 
 	<ItemGroup>
-		<PackageReference Include="Microsoft.SourceLink.GitHub">
-			<PrivateAssets>all</PrivateAssets>
-			<IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
-		</PackageReference>
 		<PackageReference Include="Nerdbank.GitVersioning">
 			<PrivateAssets>all</PrivateAssets>
 			<IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>