staging: rtl8723bs: fixed a unnecessary parentheses coding style issue

Remove unnecessary parentheses around derefrened pointers in
core/rtw_ap.c to adapter to the Linux kernel coding style.

Reported by checkpatch:

CHECK: Unnecessary parentheses around x->y

Signed-off-by: David Zalman <davidzalman.101@gmail.com>
Link: https://lore.kernel.org/r/20250319111012.1588-1-davidzalman.101@gmail.com


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