Refactor machinery to default to being anchored

code/modules/shuttle/manipulator.dm

@@ -9,7 +9,6 @@
 	icon = 'icons/obj/machines/shuttle_manipulator.dmi'
 	icon_state = "holograph_on"
 
-	anchored = TRUE
 	density = TRUE
 
 	// UI state variables

code/modules/shuttle/on_move.dm

@@ -204,11 +204,6 @@ All ShuttleMove procs go here
 		on = TRUE
 	update_list()
 
-/obj/machinery/thruster/beforeShuttleMove(turf/newT, rotation, move_mode, obj/docking_port/mobile/moving_dock)
-	. = ..()
-	if(. & MOVE_AREA)
-		. |= MOVE_CONTENTS
-
 /obj/machinery/atmospherics/afterShuttleMove(turf/oldT, list/movement_force, shuttle_dir, shuttle_preferred_direction, move_dir, rotation)
 	. = ..()
 	var/missing_nodes = FALSE