fix: drop useless pyrefly in ci (#30826)

Signed-off-by: yihong0618 <zouzou0208@gmail.com>

.github/workflows/api-tests.yml

@@ -39,12 +39,6 @@ jobs:
       - name: Install dependencies
         run: uv sync --project api --dev
 
-      - name: Run pyrefly check
-        run: |
-          cd api
-          uv add --dev pyrefly
-          uv run pyrefly check || true
-
       - name: Run dify config tests
         run: uv run --project api dev/pytest/pytest_config_tests.py