Staging: brcm80211: bcmdefs.h: remove unused #defines

There were a number of unused and unneeded defines in here, remove them.

Cc: Brett Rudley <brudley@broadcom.com>
Cc: Henry Ptasinski <henryp@broadcom.com>
Cc: Nohee Ko <noheek@broadcom.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>