Remove codecov upload given caveats on codecov/codecov-action action

- See rancher#11106 for details

.github/workflows/test.yaml

@@ -175,32 +175,6 @@ jobs:
       - name: Run tests
         uses: ./.github/actions/lint
 
-  coverage:
-    runs-on: ubuntu-latest
-    needs:
-      - unit-test
-    steps:
-      - uses: actions/checkout@v3
-        with:
-          fetch-depth: 1
-
-      - uses: actions/setup-node@v3
-        with:
-          node-version: '14.x'
-
-      - name: Download Coverage Artifacts
-        uses: actions/download-artifact@v3
-        with:
-          name: ${{github.run_number}}-${{github.run_attempt}}-coverage
-
-      - name: Upload unit test coverage to Codecov
-        uses: codecov/codecov-action@v3
-        with:
-          token: ${{ secrets.CODECOV_TOKEN }}
-          flags: unit
-          files: ./coverage/coverage-unit.json
-          fail_ci_if_error: false
-
   check-e2e-tags:
     runs-on: ubuntu-latest
     steps: