Remove some unnecessary comments from previous check-in.

Removed a "done" TODO comment.

Moved some helper methods to the top of the unit test.

Removed some commented out code I was considering implementing
before I came up with a better overall approach.


git-svn-id: https://llvm.org/svn/llvm-project/lldb/trunk@209561 91177308-0d34-0410-b5e6-96231b3b80d8