[MERGE] Remove the test_source checks that cause failures on non-quality or legal issues.

[Martin Pool]

Martin Pool has voted resubmit.
Status is now: Resubmit
Comment:
As discussed in the thread, let's keep the tests and just remove the 
part that checks for trailing whitespace.

For details, see: 
http://bundlebuggy.aaronbentley.com/project/bzr/request/%3C1235695364.24285.147.camel%40lifeless-64%3E
Project: Bazaar