removing token from codecov

Author: gagoar

.github/workflows/validation.yml

@@ -31,8 +31,7 @@ jobs:
         run: npm install
       - name: Mocha
         run: npm run test:only 
-      - name: Send coverage to codecov
+      - name: Upload coverage to Codecov
         uses: codecov/codecov-action@v1
         with:
-          token: ${{ secrets.CODECOV_TOKEN }}
-          flags: unittests
+          fail_ci_if_error: true