Remove ununsed library. Remove unused code. Fix formatting.

Signed-off-by: Michael Price <loneviking72@gmail.com>

mayan/apps/dynamic_search/classes.py

@@ -2,7 +2,6 @@ from __future__ import absolute_import, unicode_literals
 
 import datetime
 import logging
-import re
 
 from django.apps import apps
 from django.db.models import Q
@@ -280,7 +279,6 @@ class SearchModel(object):
                             else:
                                 field_result_set |= term_query_result_set
 
-
                         logger.debug(
                             'term_query_result_set: %s', len(term_query_result_set)
                         )