soc: fsl: qe: remove pointless sysfs registration in qe_ic.c

There's no point in registering with sysfs when that doesn't actually
allow any interaction with the device or driver (no uevents, no sysfs
files that provide information or allow configuration, no nothing).

Reviewed-by: Timur Tabi <timur@kernel.org>
Signed-off-by: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Signed-off-by: Li Yang <leoyang.li@nxp.com>