Remove unused import

Summary: Pull Request resolved: facebookresearch/fairseq#587

Differential Revision: D14517597

Pulled By: myleott

fbshipit-source-id: 4831ea5a9da1c2e207529a4ab3c4d0b070f5f34e

interactive.py

@@ -15,7 +15,7 @@
 
 import torch
 
-from fairseq import data, options, tasks, tokenizer, utils
+from fairseq import options, tasks, utils
 from fairseq.sequence_generator import SequenceGenerator
 from fairseq.utils import import_user_module