Update setup.py

Summary: Pull Request resolved: https://github.com/pytorch/fairseq/pull/580

Differential Revision: D14494390

Pulled By: myleott

fbshipit-source-id: 524cc16a106f2af630357e2ebdf7dde35fa7d494

setup.py

@@ -43,8 +43,7 @@ setup(
         'cffi',
         'numpy',
         'sacrebleu',
-        # don't include torch, to support both release and nightly builds
-        #'torch',
+        'torch',
         'tqdm',
     ],
     packages=find_packages(exclude=['scripts', 'tests']),