brcm80211: update the maintainers listed for brcm80211 drivers

Henry Ptasinski is not working on the brcm80211 driver so taking
his name/email out of the MAINTAINERS file.

Reviewed-by: Pieter-Paul Giesberts <pieterpg@broadcom.com>
Reviewed-by: Franky (Zhenhui) Lin <frankyl@broadcom.com>
Signed-off-by: Arend van Spriel <arend@broadcom.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

MAINTAINERS

@@ -1575,7 +1575,6 @@ F:	drivers/net/ethernet/broadcom/tg3.*
 
 BROADCOM BRCM80211 IEEE802.11n WIRELESS DRIVER
 M:	Brett Rudley <brudley@broadcom.com>
-M:	Henry Ptasinski <henryp@broadcom.com>
 M:	Roland Vossen <rvossen@broadcom.com>
 M:	Arend van Spriel <arend@broadcom.com>
 M:	Franky (Zhenhui) Lin <frankyl@broadcom.com>