Hijacking a shuttle diverts it to the syndicate outpost.

tgstation/tgstation#22184

 - Hijacking the shuttle will make it dock to a new dock on the
 syndicate outpost.
 - Fixed shuttle_master not calling mobile/dockRoundstart().
 - Only Traitors, Changelings, Vampires, Nuclear Operatives, and
 Syndicate Deathsquads can now hijack the shuttle.

code/controllers/Processes/shuttles.dm

@@ -229,10 +229,4 @@ var/const/CALL_SHUTTLE_REASON_LENGTH = 12
 	for(var/obj/docking_port/mobile/M in mobile)
 		if(!M.roundstart_move)
 			continue
-		for(var/obj/docking_port/stationary/S in stationary)
-			if(!is_station_level(S.z) && findtext(S.id, M.id))
-				S.width = M.width
-				S.height = M.height
-				S.dwidth = M.dwidth
-				S.dheight = M.dheight
-		moveShuttle(M.id, "[M.roundstart_move]", 0)
+		M.dockRoundstart()