fix: remove unicode literals import

unicode in python 2 functions is a nono

Author: mgxd

nipype/utils/misc.py

@@ -3,7 +3,7 @@
 # vi: set ft=python sts=4 ts=4 sw=4 et:
 """Miscellaneous utility functions
 """
-from __future__ import division, unicode_literals, absolute_import
+from __future__ import division, absolute_import
 from future import standard_library
 standard_library.install_aliases()
 from builtins import next, str