update github workflow

.github/workflows/torch_xla2.yml

@@ -34,9 +34,7 @@ jobs:
         shell: bash
         working-directory: experimental/torch_xla2
         run: |
-          pip install pytest absl-py jax[cpu] flatbuffers tensorflow
-          pip install torch --index-url https://download.pytorch.org/whl/cpu 
-          pip install -r test_requirements.txt
+          pip install -r test-requirements.txt
           pip install -e .
       - name: Run tests
         working-directory: experimental/torch_xla2