update sgl-kernel test ci (#4866)

Author: zhyncs

.github/workflows/pr-test-sgl-kernel.yml

@@ -84,7 +84,6 @@ jobs:
           pip3 uninstall sgl-kernel -y || true
           pip3 install sgl-kernel/dist/*whl --force-reinstall --no-deps
           pip3 list | grep sgl-kernel
-          git clone --recursive https://github.com/deepseek-ai/DeepGEMM.git && cd DeepGEMM && python3 setup.py develop
 
       - name: Run test
         timeout-minutes: 30
@@ -116,7 +115,6 @@ jobs:
           pip3 uninstall sgl-kernel -y || true
           pip3 install sgl-kernel/dist/*whl --force-reinstall --no-deps
           pip3 list | grep sgl-kernel
-          git clone --recursive https://github.com/deepseek-ai/DeepGEMM.git && cd DeepGEMM && python3 setup.py develop
 
       - name: Run test
         timeout-minutes: 30