Staging: rtl8723bs: Remove unnecessary comments

Remove unnecessary comments which are there
to explain why call to memset is in comments. Both of the
comments are not needed as they are not very useful.

Signed-off-by: Shreeya Patel <shreeya.patel23498@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>