cleanup: trivial fixes for some pyflakes warnings

kallithea/controllers/changeset.py

@@ -33,7 +33,7 b' from collections import OrderedDict, def'
 from tg import request, response
 from tg import tmpl_context as c
 from tg.i18n import ugettext as _
-from webob.exc import HTTPBadRequest, HTTPForbidden, HTTPFound, HTTPNotFound
+from webob.exc import HTTPBadRequest, HTTPForbidden, HTTPNotFound
 
 import kallithea.lib.helpers as h
 from kallithea.lib import diffs

kallithea/lib/vcs/utils/imports.py

@@ -1,6 +1,3 b''
-from kallithea.lib.vcs.exceptions import VCSError
-
-
 def import_class(class_path):
     """
     Returns class from the given path.
@@ -8,10 +5,7 b' def import_class(class_path):'
     For example, in order to get class located at
     ``vcs.backends.hg.MercurialRepository``:
 
-        try:
             hgrepo = import_class('vcs.backends.hg.MercurialRepository')
-        except VCSError:
-            # handle error
     """
     splitted = class_path.split('.')
     mod_path = '.'.join(splitted[:-1])

setup.py

@@ -112,8 +112,8 b' try:'
     long_description = open(README_FILE).read()
 except IOError as err:
     sys.stderr.write(
-        "[WARNING] Cannot find file specified as long_description (%s)\n"
-        % README_FILE
+        "[WARNING] Cannot find file specified as long_description (%s): %s\n"
+        % (README_FILE, err)
     )
     long_description = description