LP1075586 - Remove top bar in staff client

Chances are it is rigged for patron, not staff, use.

Signed-off-by: Thomas Berezansky <tsbere@mvlc.org>
Signed-off-by: Pasi Kallinen <pasi.kallinen@pttk.fi>
Signed-off-by: Ben Shum <bshum@biblio.org>