staging: brcm80211: removed NORADIO_ENAB() macro from softmac phy code

Code cleanup. Preprocessor constant EXT_CBALL was never defined so removed
related code.

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