remove import and shortened line length

cms/djangoapps/contentstore/views.py

@@ -18,7 +18,8 @@ from django.core.files.temp import NamedTemporaryFile
 # to install PIL on MacOSX: 'easy_install http://dist.repoze.org/PIL-1.1.6.tar.gz'
 from PIL import Image
 
-from django.http import HttpResponse, Http404, HttpResponseBadRequest, HttpResponseForbidden, HttpResponseServerError, HttpResponseNotFound
+from django.http import HttpResponse, Http404, HttpResponseBadRequest, HttpResponseForbidden, HttpResponseServerError
+from django.http import HttpResponseNotFound
 from django.contrib.auth.decorators import login_required
 from django.core.exceptions import PermissionDenied
 from django.core.context_processors import csrf

cms/templates/404.html

 <%inherit file="base.html" />
-<%! from django.core.urlresolvers import reverse %>
 <%block name="title">Page Not Found</%block>
 
 <%block name="content">

cms/templates/500.html

 <%inherit file="base.html" />
-<%! from django.core.urlresolvers import reverse %>
 <%block name="title">Server Error</%block>
 
 <%block name="content">