<blockquote> It was also added because some found it useful</blockquote>
I too found it useful, but problem with this kind of comments is that they become stale pretty quickly, for example `raises` or `notStrictEqual` are not in the QUnit anymore, but this comment suggest otherwise, `http://docs.jquery.com/QUnit` link also is incorrect and so forth. 

QUnit has great public documentation whereas `data/testinit.js` reference is part only of this repo, if you, for example, want to change/add some tests/assertions to `selector` module for the first time, you would have to face methods like `t`, without knowing origin of that function it could be pretty difficult to grasp its purpose.

<blockquote>Removing it is out of the scope of this PR anyway.</blockquote>
You right, rebased, but i still would like to remove it.