staging: rtl8187se: use C89 comment style instead of C99-style

This patch fixes the comments in file ieee80211/ieee80211_tx.c from
driver rtl8187se, as reported by checkpatch. The C89 comments that
contain code
are deleted.

Signed-off-by: Teodora Baluta <teobaluta@gmail.com>
Reviewed-by: Josh Triplett <josh@joshtriplett.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>