Remove explicit poll interval for tooltips
Remove explicit poll interval for tooltips

* The default value for this, from jquery-tooltip, is 100ms
  which seems to be fine in practice.

  During testing of the edit payment amount feature I was
  continuously using the icons, and the delay was noticeable. Now,
  granted, I was hyper-aware of the delay because I used the feature
  many times in a row I felt like when I adjusted it to 100ms it was
  almost effortless, but at the same time the response was not so
  immediate to be jarring. It still required me to make a concious
  effort to stop the mouse on the icon before the tooltip would
  respond, I can't recall it happening without effort though.

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