b43: N-PHY: drop second noise variance table

New Broadcom drivers don't upload it anymore. It was probably a copy & paste
mistake in early N-PHY rev 3+ days.

Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

diff --cc drivers/net/wireless/b43/tables_nphy.c
Simple merge

diff --cc drivers/net/wireless/b43/tables_nphy.h
Simple merge