Staging: rtl8187se: Remove useless comments in dot11d.c

This patch removes unnecessary comments in ieee80211/dot11d.c.

Signed-off-by: Rashika Kheria <rashika.kheria@gmail.com>
Reviewed-by: Josh Triplett <josh@joshtriplett.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>