Disable fastd peformance mode option (as decided by the ffdo infrastructure team)

site.conf

@@ -36,7 +36,6 @@
 
 	fastd_mesh_vpn = {
 		methods = {'salsa2012+umac'},
-		configurable = true,
 		mtu = 1280,
 		groups = {
 			do01 = {

site.mk

@@ -14,7 +14,6 @@ GLUON_SITE_PACKAGES := \
         gluon-ebtables-filter-ra-dhcp \
         gluon-luci-admin \
         gluon-luci-autoupdater \
-        gluon-luci-mesh-vpn-fastd \
         gluon-luci-portconfig \
         gluon-luci-private-wifi \
         gluon-luci-wifi-config \