Remove redundant 'typecheck' linter

[alexandear]

Description

This PR removes redundant typecheck from the linters.enable list.

typecheck is not a linter and it doesn't perform any analysis. It's just a way to identify, parse, and display compiling errors and some linter errors.

More info:

• https://golangci-lint.run/welcome/faq/#why-do-you-have-typecheck-errors
• https://golangci-lint.run/welcome/faq/#why-is-it-not-possible-to-skipignore-typecheck-errors

Checklist

• Added tests that cover your change (if possible)
• Added/modified documentation as required (such as the README.md, or the userdocs directory)
• Manually tested
• Made sure the title of the PR is a good description that can go into the release notes
• (Core team) Added labels for change area (e.g. area/nodegroup) and kind (e.g. kind/improvement)

BONUS POINTS checklist: complete for good vibes and maybe prizes?! 🤯

• Backfilled missing tests for code in same general area 🎉
• Refactored something and made the world a better place 🌟