Refactor machinery/anchored to default to TRUE

Deletes /obj/machinery/thruster.

Changes the density of the following abstract types:
- /obj/machinery/modular_computer
- /obj/machinery/mineral
- /obj/machinery/field
- /obj/machinery/particle_accelerator
- /obj/machinery/abductor
- /obj/machinery/telecomms

code/game/machinery/_machinery.dm

@@ -92,6 +92,7 @@ Class Procs:
 	pressure_resistance = 15
 	max_integrity = 200
 
+	anchored = TRUE
 	interaction_flags_atom = INTERACT_ATOM_ATTACK_HAND | INTERACT_ATOM_UI_INTERACT
 
 	var/stat = 0

code/game/machinery/porta_turret/portable_turret_construct.dm

@@ -13,6 +13,7 @@
 	icon = 'icons/obj/turrets.dmi'
 	icon_state = "turret_frame"
 	desc = "An unfinished covered turret frame."
+	anchored = FALSE
 	density = TRUE
 	var/build_step = PTURRET_UNSECURED //the current step in the building process
 	var/finish_name = "turret"	//the name applied to the product turret

code/game/objects/structures/manned_turret.dm

@@ -6,6 +6,7 @@
 	icon = 'icons/obj/turrets.dmi'
 	icon_state = "machinegun"
 	can_buckle = TRUE
+	anchored = FALSE
 	density = TRUE
 	max_integrity = 100
 	buckle_lying = FALSE

code/modules/antagonists/nukeop/equipment/nuclearbomb.dm

@@ -3,6 +3,7 @@
 	desc = "You probably shouldn't stick around to see if this is armed."
 	icon = 'icons/obj/machines/nuke.dmi'
 	icon_state = "nuclearbomb_base"
+	anchored = FALSE
 	density = TRUE
 	resistance_flags = INDESTRUCTIBLE | LAVA_PROOF | FIRE_PROOF | UNACIDABLE | ACID_PROOF
 

code/modules/atmospherics/machinery/portable/portable_atmospherics.dm

@@ -4,7 +4,7 @@
 	use_power = NO_POWER_USE
 	max_integrity = 250
 	armor = list("melee" = 0, "bullet" = 0, "laser" = 0, "energy" = 100, "bomb" = 0, "bio" = 100, "rad" = 100, "fire" = 60, "acid" = 30)
-
+	anchored = FALSE
 
 	var/datum/gas_mixture/air_contents
 	var/obj/machinery/atmospherics/components/unary/portables_connector/connected_port

code/modules/mob/living/simple_animal/bot/bot.dm

@@ -837,6 +837,7 @@ Pass a positive integer as an argument to override a bot's default speed.
 // Machinery to simplify topic and access calls
 /obj/machinery/bot_core
 	use_power = NO_POWER_USE
+	anchored = FALSE
 	var/mob/living/simple_animal/bot/owner = null
 
 /obj/machinery/bot_core/Initialize()

code/modules/mob/living/simple_animal/hostile/megafauna/colossus.dm

@@ -355,6 +355,7 @@ Difficulty: Very Hard
 	light_range = 8
 	resistance_flags = INDESTRUCTIBLE | LAVA_PROOF | FIRE_PROOF | ACID_PROOF
 	use_power = NO_POWER_USE
+	anchored = FALSE
 	density = TRUE
 	flags_1 = HEAR_1
 	var/activation_method

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

code/modules/station_goals/shield.dm

@@ -87,10 +87,11 @@
 	desc = ""
 	icon = 'icons/obj/machines/satellite.dmi'
 	icon_state = "sat_inactive"
-	var/mode = "NTPROBEV0.8"
-	var/active = FALSE
+	anchored = FALSE
 	density = TRUE
 	use_power = FALSE
+	var/mode = "NTPROBEV0.8"
+	var/active = FALSE
 	var/static/gid = 0
 	var/id = 0