System.Text.Encoding.CodePages giving warning will not be pruned when used with .net version 10

[sk-Nikhil]

Version Used: .net 10

Steps to Reproduce:

1. PackageReference Include="System.Text.Encoding.CodePages"
   Version="10.0.0"
2. use targetFramework .net version 10

A minimal repro, with source-code provided, is ideal. Most compiler/language issues can be distilled into a snippet that can be pasted into .NET Lab.

Diagnostic Id:

If this is a report about a bug in an analyzer, please include the diagnostic ID and message if possible (e.g. "IDE0030: Use coalesce expression").

Expected Behavior:should not give error/warning

Actual Behavior: PackageReference System.Text.Encoding.CodePages will not be pruned. Consider removing this package from your dependencies, as it is likely unnecessary.

[CyrusNajmabadi]

@sk-Nikhil what interaction do you think Roslyn with this diagnostic? was this a CS#### warning you got?

[sk-Nikhil]

yeah i was getting warning in for the .csproj file, when "System.Text.Encoding.CodePages" used with dotnet version 8, for dotnet version 10 no warnings was thrown

[marcpopMSFT]

Package pruning. CC @nkolev92 @dsplaisted From the warning message, are you able to remove that package reference and still use the package in your app? Presumably that reference is already being provided by the runtime targeting pack and unnecessary.