Remove seemingly-unecessary DetachEntity() in GameScreenBase.
Remove seemingly-unecessary DetachEntity() in GameScreenBase.

space-wizards/space-station-14,space-wizards/space-station-14,space-wizards/space-station-14-content,space-wizards/space-station-14,space-wizards/space-station-14,space-wizards/space-station-14-content,space-wizards/space-station-14-content,space-wizards/space-station-14,space-wizards/space-station-14