Revert "Input: ioc3kbd - convert to platform remove callback returning void"

This reverts commit 369d8da0 which is
commit 150e792d upstream.

It breaks the Android kernel build and is not really needed at all.

Change-Id: I7fcb82ca3cf9f8d9e3845ad391c1d0d2156ed12f
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>