staging: rtl8188eu: Remove braces from single statement blocks

This patch fix a coding style issue, by removing braces {} from single
statement blocks.

Issue found by checkpatch.pl.

Signed-off-by: Mihaela Muraru <mihaela.muraru21@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>