Fix nuget dependencies (no ValueTuple for 472)

Author: ig-sinicyn

Main/src/CodeJam.Main.csproj

@@ -69,7 +69,6 @@
 	</ItemGroup>
 	<ItemGroup Condition=" '$(TargetFramework)' == 'net472' ">
 		<Reference Include="System.ComponentModel.DataAnnotations" />
-		<PackageReference Include="System.ValueTuple" Version="4.4.0" />
 	</ItemGroup>
 	<ItemGroup Condition=" '$(TargetFramework)' == 'net461' ">
 		<Reference Include="System.ComponentModel.DataAnnotations" />