Remove NoWarn directive for MSTEST0037

- No Assert.IsTrue violations exist in the codebase
- The test file only contains an empty test method
- Project should build cleanly without suppression

Author: claude

test/NosCore.ParserInputGenerator.Tests/NosCore.ParserInputGenerator.Tests.csproj

@@ -4,7 +4,6 @@
 		<TargetFramework>net10.0</TargetFramework>
 		<TreatWarningsAsErrors>true</TreatWarningsAsErrors>
 		<IsPackable>false</IsPackable>
-		<NoWarn>$(NoWarn);MSTEST0037</NoWarn>
 	</PropertyGroup>
 
 	<ItemGroup>