Remove duplicate JetBrains.ReSharper.CommandLineTools package reference

This line was a duplicate and the build tools complained about it.

Author: andyleejordan

.build/.build.csproj

@@ -14,7 +14,6 @@
         <PackageReference Include="JetBrains.ReSharper.CommandLineTools" ExcludeAssets="All" />
         <PackageReference Include="GitVersion.Tool" ExcludeAssets="All" />
         <PackageReference Include="ReportGenerator" ExcludeAssets="All" />
-        <PackageReference Include="JetBrains.ReSharper.CommandLineTools" ExcludeAssets="All" />
         <PackageReference Include="Rocket.Surgery.Nuke" />
     </ItemGroup>