staging: brcm80211: removed several unused softmac main.h struct members

Members were always set to zero, or set but never read.

Signed-off-by: Roland Vossen <rvossen@broadcom.com>
Reviewed-by: Arend van Spriel <arend@broadcom.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

diff --cc drivers/staging/brcm80211/brcmsmac/main.c
Simple merge

diff --cc drivers/staging/brcm80211/brcmsmac/main.h
Simple merge