Refactor machinery to default to being anchored

code/game/machinery/computer/_computer.dm

@@ -3,7 +3,6 @@
 	icon = 'icons/obj/computer.dmi'
 	icon_state = "computer"
 	density = TRUE
-	anchored = TRUE
 	use_power = IDLE_POWER_USE
 	idle_power_usage = 300
 	active_power_usage = 300

code/game/machinery/computer/atmos_control.dm

@@ -6,7 +6,6 @@
 	name = "gas sensor"
 	icon = 'icons/obj/stationobjs.dmi'
 	icon_state = "gsensor1"
-	anchored = TRUE
 
 	var/on = TRUE
 

code/game/machinery/computer/dna_console.dm

@@ -33,7 +33,6 @@
 	var/obj/machinery/dna_scannernew/connected = null
 	var/obj/item/disk/data/diskette = null
 	var/list/delayed_action = null
-	anchored = TRUE
 	use_power = IDLE_POWER_USE
 	idle_power_usage = 10
 	active_power_usage = 400