Remove useless future imports from Py3 code.

Author: scoder

src/quicktions.pyx

@@ -1,4 +1,4 @@
-# cython: language_level=3str
+# cython: language_level=3
 ## cython: profile=True
 
 # Copyright (c) 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010,
@@ -20,9 +20,6 @@ This is an almost-drop-in replacement for the standard library's
 "fractions.Fraction".
 """
 
-from __future__ import division, absolute_import, print_function
-
-
 __all__ = ['Fraction']
 
 __version__ = '1.19'