staging: rtl8188eu: remove braces from single line if blocks

Remove braces from single line if blocks to clear checkpatch warnings.
WARNING: braces {} are not necessary for single statement blocks

Signed-off-by: Michael Straube <straube.linux@gmail.com>
Link: https://lore.kernel.org/r/20210726092129.30334-1-straube.linux@gmail.com


Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>