remove commented out code. Also fix up indents and other violations

common/lib/xmodule/xmodule/modulestore/xml_exporter.py

 import logging
 from xmodule.modulestore import Location
-from xmodule.modulestore.django import modulestore
 from xmodule.modulestore.inheritance import own_metadata
 from fs.osfs import OSFS
 from json import dumps
 
 
-def export_to_xml(modulestore, contentstore, course_location, root_dir, course_dir, draft_modulestore = None):
+def export_to_xml(modulestore, contentstore, course_location, root_dir, course_dir, draft_modulestore=None):
 
     course = modulestore.get_item(course_location)
 
@@ -40,16 +39,6 @@ def export_to_xml(modulestore, contentstore, course_location, root_dir, course_d
         policy = {'course/' + course.location.name: own_metadata(course)}
         course_policy.write(dumps(policy))
 
-  # export everything from the draft store, unfortunately this will create lots of duplicates
-  '''
-  if draft_modulestore is not None:
-      draft_course = draft_modulestore.get_item(course_location)
-      
-      xml = draft_course.export_to_xml(draft_course_dir)
-      with draft_course_dir.open('course.xml', 'w') as course_xml:
-        course_xml.write(xml)
-  '''
-
     # export draft content
     # NOTE: this code assumes that verticals are the top most draftable container
     # should we change the application, then this assumption will no longer
@@ -57,8 +46,7 @@ def export_to_xml(modulestore, contentstore, course_location, root_dir, course_d
     if draft_modulestore is not None:
         draft_verticals = draft_modulestore.get_items([None, course_location.org, course_location.course,
                                                        'vertical', None, 'draft'])
-  
-    if len(draft_verticals)>0:
+        if len(draft_verticals) > 0:
             draft_course_dir = export_fs.makeopendir('drafts')
             for draft_vertical in draft_verticals:
                 parent_locs = draft_modulestore.get_parent_locations(draft_vertical.location, course.location.course_id)