Staging: rtl8188eu: core: Remove else after break

Remove else after break statements to fix following checkpatch.pl
warnings:
WARNING: else is not generally useful after a break or return.

Signed-off-by: Puranjay Mohan <puranjay12@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>