Whitespace cleanup.

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

tests/m2m_regress/tests.py

@@ -108,4 +108,3 @@ class M2MRegressionTests(TestCase):
         worksheet.lines = hi
         self.assertEqual(1, worksheet.lines.count())
         self.assertEqual(1, hi.count())
-