staging: rtl8188eu: core: Removed unnecessary parenthesis.

This patch removes unnecessarry parenthesis in rtw_security.c by
using this coccinelle script:

@r1@
expression e1,e2;
@@
if
- ((e1 == e2))
+ (e1 == e2)
{...}

Signed-off-by: Gulsah Kose <gulsah.1004@gmail.com>
Acked-by: Julia Lawall <julia.lawall@lip6.fr>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>