fix: py-torch -mkldnn

py-torch by default enables mkldnn, which pulls in 5.4 GB of intel-oneapi-mkl. This disables the mkldnn functionality in py-torch.

spack-environment/packages.yaml

@@ -312,6 +312,7 @@ packages:
   py-torch:
     require:
     - '@2.1.0'
+    - -mkldnn
   py-uproot:
     require:
     - '@5.0.5'