remove errant dependency

Author: mibewh

cloudcms-csharp-driver.csproj

@@ -27,7 +27,6 @@
 
   <ItemGroup>
     <None Include="LICENSE" Pack="true" PackagePath="" />
-    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="16.6.1" />
     <PackageReference Include="Newtonsoft.Json" Version="12.0.1" />
     <PackageReference Include="xunit" Version="2.4.1" />
     <PackageReference Include="xunit.runner.visualstudio" Version="2.4.1" />