remove requests from .github/workflows/tests.yaml because requests has already been added to requirements.txt.

Author: wencan

.github/workflows/tests.yaml

@@ -23,7 +23,7 @@ jobs:
         python -m pip install --upgrade pip
         pip install pytest
         if [ -f requirements.txt ]; then pip install -r requirements.txt; fi
-        pip install "paddlepaddle==2.5" requests
+        pip install "paddlepaddle==2.5"
         pip install -e .
     - name: Test with pytest
       run: |