ci: remove black check to avoid large formatting changes

Author: s3ldc

.github/workflows/ci.yml

@@ -29,10 +29,6 @@ jobs:
         run: |
           pip install .[dev]
 
-      - name: Check formatting (black)
-        run: |
-          black --check src
-
       - name: Lint (flake8)
         run: |
           flake8 src