Remove codeclimate integration

Project is dead.

Author: smortex

.github/workflows/ci.yml

@@ -41,13 +41,5 @@ jobs:
         with:
           ruby-version: ${{ matrix.ruby }}
           bundler-cache: true
-      - name: Run tests without uploading code coverage
-        if: ${{ matrix.ruby != '3.0' }}
+      - name: Run tests
         run: bundle exec rake
-      - name: Run tests and upload coverage to Code Climate
-        if: ${{ matrix.ruby == '3.0' }}
-        uses: paambaati/[email protected]
-        env:
-          CC_TEST_REPORTER_ID: ${{ secrets.CODECLIMATE_TOKEN }}
-        with:
-          coverageCommand: bundle exec rake