unused function was removed.

Author: guylev

prepare_data_for_hmm.py

@@ -3,7 +3,6 @@
 import re
 from nltk.tokenize import word_tokenize, sent_tokenize
 from nltk.corpus import stopwords
-from difflib import SequenceMatcher
 import pandas as pd
 import argparse
 
@@ -95,10 +94,6 @@ def get_vocab(glove_fname, vocab_size):
 
         return vocab
 
-    @staticmethod
-    def similar(a, b):
-        return SequenceMatcher(None, a, b).ratio()
-
     @staticmethod
     def isfloat(value):
         try: