Clear Fedora boot type

roles/netbootxyz/templates/menu/fedora.ipxe.j2

@@ -12,6 +12,7 @@ goto ${menu} ||
 clear osversion
 clear sku_type
 clear ova
+clear bt
 set os {{ releases.fedora.name }}
 set os_arch ${arch}
 iseq ${os_arch} x86_64 && set os_arch x86_64 ||