remove unused exception (pytorch#2832)

Summary:
Pull Request resolved: pytorch#2832

As title:
https://www.internalfb.com/diff/D52531661?dst_version_fbid=1014237276957412&transaction_fbid=485161920675232

Thanks nanoax for identify this issue!

Reviewed By: nanoax

Differential Revision: D59655439

fbshipit-source-id: 6105fe924c97d5cba83e0adf85c35b34e6319341

fbgemm_gpu/fbgemm_gpu/permute_pooled_embedding_modules.py

@@ -29,8 +29,6 @@
         torch.ops.load_library(
             "//deeplearning/fbgemm/fbgemm_gpu:permute_pooled_embedding_ops_gpu_cuda"
         )
-except OSError:
-    pass
 
 
 class PermutePooledEmbeddings: