remove python2.7 futures

qurator/dinglehopper/character_error_rate.py

@@ -1,5 +1,3 @@
-from __future__ import division
-
 import unicodedata
 from typing import Tuple
 

qurator/dinglehopper/edit_distance.py

@@ -1,5 +1,3 @@
-from __future__ import division, print_function
-
 import unicodedata
 
 from multimethod import multimethod

qurator/dinglehopper/ocr_files.py

@@ -1,5 +1,3 @@
-from __future__ import division, print_function
-
 import os
 import sys
 from typing import Iterator

qurator/dinglehopper/word_error_rate.py

@@ -1,5 +1,3 @@
-from __future__ import division
-
 import unicodedata
 from typing import Tuple, Iterable
 from multimethod import multimethod