Remove installation of runtime 2.1.0 from build.sh

[dseefeld]

Installation of another runtime in build.sh doesn't work for source-build when building offline.

[marcpopMSFT]

@dseefeld Since the SDK switched over to using System.CommandLine instead of this, I was going to archive the repo. Any concerns with closing out these PRs and archiving it?

[dseefeld]

@dseefeld Since the SDK switched over to using System.CommandLine instead of this, I was going to archive the repo. Any concerns with closing out these PRs and archiving it?

I don't think this should be closed. I would like to see this fixed, so we can remove the patch that is required to build this in source-build.

[marcpopMSFT]

@dseefeld Is templating still using commandline parser? @vlada-shubina, when will that get removed so we can archive this repo as I'm trying to save time on various compliance activities for code that's not used anymore.

[vlada-shubina]

Templating is still using old parser.

dotnet/templating#2191 is epic for migration, im working on it at the moment, but it won't be released earlier than .NET 7.

[kasperk81]

templating moved to new api and source build has removed this dependency dotnet/installer#13491

you can archive this repository and close pending prs in favor of https://github.com/dotnet/command-line-api