remove the upload to codecov action step

Author: MAfarrag

.github/workflows/tests.yml

@@ -34,10 +34,6 @@ jobs:
         run: |
           uv run pytest -vvv --cov=src/statista --cov-report=xml --junitxml=junit.xml -o junit_family=legacy
 
-      - name: Upload test results to Codecov
-        if: ${{ !cancelled() }}
-        uses: codecov/test-results-action@v1
-
       - name: Upload coverage reports to Codecov with GitHub Action
         uses: codecov/codecov-action@v5