Remove test line without effect because no should.

I think the `should ==` was forgotten, as the return value is never used, and the function is only used in intermediate steps, not on the conclusions.

If I add the should, tests start to fail. Not sure if Poltergeist can handle `window.location` stuff.

Even if it could, tests should still fail, because when you edit the issue search all possible parameters get added to the URL, not just the `issue_search`.

So let's remove this.