Whitespace cleanup.

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

tests/custom_columns_regress/models.py

@@ -36,6 +36,3 @@ class Author(models.Model):
     class Meta:
         db_table = 'my author table'
         ordering = ('last_name','first_name')
-
-
-