Cleanup duplication in api.js

[oliversalzburg]

The only reference to the file is in a test. It's not used in this plugin and I can't find another plugin that references it.

In fact, there is a lot of code duplication between api.js and index.js.

[oliversalzburg]

Ah, now I see the usages. I was grep'ing for api.js and didn't find the imports.

However, my point about the code duplication remains. Is there a reason for this?