rollback a bit

Author: BanzaiTokyo

.github/workflows/tpu-tests.yml

@@ -73,7 +73,7 @@ jobs:
           pip install mkl==2021.4.0
 
           ## Install torch & xla and torchvision
-          pip install --pre --no-cache-dir --trusted-host download.pytorch.org torch torchvision --index-url https://download.pytorch.org/whl/nightly/cpu
+          pip install --pre torch torchvision --index-url https://download.pytorch.org/whl/nightly/cpu
           pip install https://storage.googleapis.com/pytorch-xla-releases/wheels/tpuvm/torch_xla-nightly-cp310-cp310-linux_x86_64.whl
 
           # Check installation