Simplify Codecov setup

Author: novemberborn

.github/workflows/ci.yml

@@ -32,8 +32,6 @@ jobs:
  - run: npm ci --no-audit
  - run: npm test
  - uses: codecov/codecov-action@v1
- with:
- token: ${{ secrets.CODECOV_TOKEN }}
 
  lockfile_churn:
  name: Test package-lock for unexpected modifications