Remove precommit black config

Black should just be able to use it's regular config and avoid repetition.

#51 (comment)

Author: altendky

.pre-commit-config.yaml

@@ -4,9 +4,6 @@ repos:
     hooks:
       - id: black
         language_version: python3.8
-        # override until resolved: https://github.com/ambv/black/issues/402
-        files: \.pyi?$
-        types: []
 
   - repo: https://github.com/asottile/blacken-docs
     rev: v1.0.0