Fix dropship equipment infinite loop (#5823)

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Resolves issue patched by
cmss13-devs/cmss13#5817
Bugs are bad

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:cl:
code: removed duplicated signal code from dropship equipment
/:cl:

code/modules/cm_marines/dropship_equipment.dm

@@ -21,6 +21,7 @@
 	var/skill_required = SKILL_PILOT_TRAINED
 	var/combat_equipment = TRUE
 
+
 /obj/structure/dropship_equipment/Destroy()
 	QDEL_NULL(ammo_equipped)
 	if(linked_shuttle)
@@ -35,6 +36,7 @@
 		linked_console = null
 	. = ..()
 
+
 /obj/structure/dropship_equipment/attack_alien(mob/living/carbon/xenomorph/current_xenomorph)
 	if(unslashable)
 		return XENO_NO_DELAY_ACTION