chore: remove pre-commit GHA (#6565)

[`pre-commit.ci` is working](https://results.pre-commit.ci/repo/github/63476337) so let's remove our redundant and less powerful GitHub Action.

.github/workflows/pre-commit.yml

@@ -1,28 +0,0 @@
-name: pre-commit
-
-on:
-  push:
-    branches: [ master ]
-  pull_request:
-    branches: [ master ]
-
-jobs:
-  pre-commit:
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@v3
-      - uses: actions/cache@v3
-        with:
-          path: |
-            ~/.cache/pre-commit
-            ~/.cache/pip
-          key: ${{ runner.os }}-pre-commit-${{ hashFiles('.pre-commit-config.yaml') }}
-      - uses: actions/setup-python@v4
-        with:
-          python-version: 3.x
-      # - uses: psf/black@22.6.0
-      - name: Install pre-commit
-        run: |
-          python -m pip install --upgrade pip
-          python -m pip install --upgrade pre-commit
-      - run: pre-commit run --verbose --all-files --show-diff-on-failure