remove manage_externals error

git_fleximod/utils.py

@@ -241,12 +241,12 @@ def _hanging_msg(working_directory, command):
 has taken {hanging_sec} seconds. It may be hanging.
 
 The command will continue to run, but you may want to abort
-manage_externals with ^C and investigate. A possible cause of hangs is
-when svn or git require authentication to access a private
-repository. On some systems, svn and git requests for authentication
-information will not be displayed to the user. In this case, the program
-will appear to hang. Ensure you can run svn and git manually and access
-all repositories without entering your authentication information.
+git-fleximod with ^C and investigate. A possible cause of hangs is git
+requires authentication to access a private repository. On some
+systems, git requests for authentication information will not
+be displayed to the user. In this case, the program will appear to
+hang. Ensure you can run git manually and access all
+repositories without entering your authentication information.
 
 """.format(
             command=command,