Fix PyTorch installation

Author: ElliottKasoar

.github/workflows/test_suite_macos.yml

@@ -96,7 +96,7 @@ jobs:
           python -m pip install --upgrade pip
           python -m venv ftorch
           . ftorch/bin/activate
-          pip install torch torchvision --index-url https://download.pytorch.org/whl/cpu
+          pip install torch torchvision
 
       - name: Build FTorch
         run: |