Removed SimpleSearchFormWithSubclasses. The only thing that needed this was...

Removed SimpleSearchFormWithSubclasses. The only thing that needed this was the gstlalcbc report page, and there is a simple workaround instead: just get a list of Event objects, and upcast them to CoincInspiralEvents. One wrinkle is that the matplotlib call 'fill_between' (which had given us that nice grey region on either side of the expected IFAR line) seems to hang now. I emailed Chad and commented this out.