Remove NuGet.Build.Tasks.Pack

Author: kjnilsson

projects/client/RabbitMQ.Client/RabbitMQ.Client.csproj

@@ -73,7 +73,6 @@
   </ItemGroup>
 
   <ItemGroup>
-    <PackageReference Include="NuGet.Build.Tasks.Pack" Version="5.4.0" PrivateAssets="All" />
     <PackageReference Include="Microsoft.NETFramework.ReferenceAssemblies" Version="1.0.0" PrivateAssets="All" />
   </ItemGroup>