[ARM] 5206/1: remove kprobe_trap_handler() hack

As mentioned in commit 79696910,
and because of commit b03a5b75

,
the direct calling of kprobe_trap_handler() can be removed.

Signed-off-by: Nicolas Pitre <nico@marvell.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>