Merge pull request matplotlib#31648 from timhoffm/precommit-rstcheck-dependencies

MNT: Remove pre-commit/rstcheck dependency on tomli

Author: tacaswell

.pre-commit-config.yaml

@@ -72,7 +72,6 @@ repos:
         additional_dependencies:
           - rstcheck-core!=1.3  # https://github.com/rstcheck/rstcheck-core/pull/114#pullrequestreview-4239740896
           - sphinx>=1.8.1
-          - tomli
   - repo: https://github.com/adrienverge/yamllint
     rev: cba56bcde1fdd01c1deb3f945e69764c291a6530  # frozen: v1.38.0
     hooks: