Remove dead calls to autocomplete

We are not using autocomplete anymore, so calls to it just do nothing
(in jQuery UI 1.8) or fail loudly (in jQuery UI 1.9).

Change-Id: I9bfbfcb8c78a2759b08a761bf66ca981a25621aa
(cherry picked from commit 343ebb66e26804fe895f6866804ad1da96e8842b)