Update test-coverage.yaml

Author: hannahlowens

.github/workflows/test-coverage.yaml

@@ -41,10 +41,3 @@ jobs:
           ## --------------------------------------------------------------------
           find ${{ runner.temp }}/package -name 'testthat.Rout*' -exec cat '{}' \; || true
         shell: bash
-
-      - name: Upload test results
-        if: failure()
-        uses: actions/cache/save@v4
-        with:
-          name: coverage-test-failures
-          path: ${{ runner.temp }}/package