Update requirements.txt

requirements.txt

@@ -1,5 +1,4 @@
-# CUDA-12 build of PyTorch 2.3
-torch==2.3.0+cu121 -f https://download.pytorch.org/whl/torch_stable.html
+--extra-index-url https://download.pytorch.org/whl/cu121
+torch==2.3.0+cu121     # CUDA-12 build of PyTorch 2.3
+spaces                 # tiny utility lib used by Hugging Face Spaces
 
-# tiny helpers your app imports
-spaces