Remove lint from AppVeyor (#17745)
Summary of the issue:
Since #16751, linting has been checked via pre-commit.ci rather than AppVeyor.
As a result the lint check in AppVeyor is redundant and adds unnecessary noise and time to the AppVeyor build.
Description of user facing changes
None
Description of development approach
Remove linting from AppVeyor.
Testing strategy:
Automated CI
Known issues with pull request:
None
