Disable nonpassing tests, minor code reformatting.

The map_remove tests fail right now because the test harness does not generate
valid inputs to the remove call. Options to solve are:

1. Write custom harness for this operation, handling one more edge case among
many others.

2. Create a new test harness that is a better framework for testing all of the
edge cases in the HyperDex API.

I'm leaning towards 2.