Whitespace cleanup.

* Removed trailing whitespace.
* Added newline to EOF if missing.
* Removed blank lines at EOF.
* Removed some stray tabs.

tests/multiple_database/routers.py

@@ -58,4 +58,3 @@ class WriteRouter(object):
     # A router that only expresses an opinion on writes
     def db_for_write(self, model, **hints):
         return 'writer'
-