wpa: Disable P2P in WPS

Disable P2P in WPS as it is not supported by FreeBSD. Also, it is not
enabled in wpa_supplicant so the WPS P2P code is redundant.

PR:		264238
Reported by:	adrian
MFC after:	3 days

usr.sbin/wpa/src/wps/Makefile

@@ -27,8 +27,6 @@ SRCS=	http_client.c \
 	wps_upnp_ssdp.c \
 	wps_upnp_web.c
 
-CFLAGS+=-DCONFIG_P2P
-
 .if ${MK_INET6} != "no"
 CFLAGS+= -DCONFIG_IPV6
 .endif