This thing was starting a timer that re-starts itself forever, and when
the file it was watching changed, it would just assume the drawing
objects were still there (and the document, for that matter...)
Change-Id: I35f187f0828097a05618dc1733dce819fc6bffc6
It's too confusing to have UI code inside of core; the important part is
that it's separated from the optional UI code in swui library.
Change-Id: I640a52723d5802faf08f3b8eaa03cd937fd93449