CLN: Eliminate handful of test docstrings, use nose -v on travis
I'm being forced to do unspeakable thing in aid of pandas and these docstring 
outliers are getting in the way.

Travis builds every PR twice. Once in the submitter repo and once in the submitee repo. Weird.
I guess they don't mind 100s/1000s of unnecessary builds every day.

cc @travis-ci
