Remove package reference

Author: MaggieKimani1

src/Microsoft.OpenApi/Microsoft.OpenApi.csproj

@@ -38,7 +38,6 @@
 
     <ItemGroup>
         <PackageReference Include="Microsoft.AspNetCore.Mvc.Core" Version="2.2.5" />
-        <PackageReference Include="Microsoft.SourceLink.GitHub" Version="1.0.0" PrivateAssets="All" />
     </ItemGroup>
 
     <ItemGroup>