Clean up get() calls, remove commented out code

@Ignat99 PTAL.

As suggested by @dionyziz at https://github.com/OpenBazaar/OpenBazaar/pull/658#issuecomment-56653243 I created a PR out of my own code-review comments.
Here some sort of mistake. I do not plan to accept or reject here patches for OpenBazaar. Patches for my projects are welcome.