Maint drones now return to the drone manufacturer when shutdown (#23367)

* luv me some drones

* uhhh WIP

* ..() moment

* Gaxeer review & misc change

* henri review

* tgui

* boom, i think

* oops

* sirryan review

* final stuff

* lmaooo

* Apply suggestions from code review

Co-authored-by: Deniz <66401072+Oyu07@users.noreply.github.com>

---------

Co-authored-by: Deniz <66401072+Oyu07@users.noreply.github.com>

code/game/verbs/suicide.dm

@@ -61,9 +61,6 @@
 	//put em at -175
 	adjustOxyLoss(max(maxHealth * 2 - getToxLoss() - getFireLoss() - getBruteLoss() - getOxyLoss(), 0))
 
-/mob/living/silicon/robot/drone/do_suicide()
-	shut_down()
-
 /mob/living/silicon/pai/do_suicide()
 	if(mobility_flags & MOBILITY_MOVE)
 		close_up()