PEP8 cleanups.

mayan/apps/common/forms.py

@@ -1,6 +1,5 @@
 from __future__ import unicode_literals
 
-from operator import itemgetter
 import os
 
 from django import forms

mayan/apps/common/management/commands/runtests.py

@@ -1,7 +1,5 @@
 from __future__ import unicode_literals
 
-from optparse import make_option
-
 from django import apps
 from django.core import management
 

mayan/apps/common/widgets.py

@@ -1,7 +1,5 @@
 from __future__ import unicode_literals
 
-import os
-
 from django import forms
 from django.forms.utils import flatatt
 from django.utils.encoding import force_unicode, force_text