Drone devices removal (#6724)

# About the pull request

removes unused shit

# Explain why it's good for the game

cleaner code


# Testing Photographs and Procedure
<details>
<summary>Screenshots & Videos</summary>

Put screenshots and videos here with an empty line between the
screenshots and the `<details>` tags.

</details>


# Changelog
:cl:
del:/obj/item/device/gripper and /obj/item/device/matter_decompiler
removed
/:cl:

---------

Co-authored-by: vincibrv <[email protected]>

code/game/objects/prop.dm

@@ -169,6 +169,18 @@
 	icon_state = "game_kit"
 	icon = 'icons/obj/items/items.dmi'
 
+/obj/item/prop/gripper
+	name = "magnetic gripper"
+	desc = "A simple grasping tool for synthetic assets."
+	icon_state = "gripper"
+	icon = 'icons/obj/items/devices.dmi'
+
+/obj/item/prop/matter_decompiler
+	name = "matter decompiler"
+	desc = "Eating trash, bits of glass, or other debris will replenish your stores."
+	icon_state = "decompiler"
+	icon = 'icons/obj/items/devices.dmi'
+
 /// Xeno-specific props
 
 /obj/item/prop/alien/hugger

colonialmarines.dme

@@ -1121,7 +1121,6 @@
 #include "code\game\objects\items\devices\debugger.dm"
 #include "code\game\objects\items\devices\defibrillator.dm"
 #include "code\game\objects\items\devices\device.dm"
-#include "code\game\objects\items\devices\drone_devices.dm"
 #include "code\game\objects\items\devices\dummy_tablet.dm"
 #include "code\game\objects\items\devices\flash.dm"
 #include "code\game\objects\items\devices\flashlight.dm"

maps/map_files/CORSAT/Corsat.dmm

@@ -24929,7 +24929,7 @@
 /area/corsat/gamma/biodome/complex)
 "bTQ" = (
 /obj/structure/surface/table/reinforced,
-/obj/item/device/gripper,
+/obj/item/prop/gripper,
 /turf/open/floor/corsat/retrosquareslight,
 /area/corsat/sigma/south/complex)
 "bTU" = (

maps/map_files/FOP_v2_Cellblocks/Prison_Station_FOP.dmm

@@ -18901,7 +18901,7 @@
 /area/prison/security/monitoring/highsec)
 "btD" = (
 /obj/structure/surface/table/reinforced,
-/obj/item/device/matter_decompiler,
+/obj/item/prop/matter_decompiler,
 /turf/open/floor/prison/redfull,
 /area/prison/hallway/central/west)
 "btE" = (

maps/map_files/Sorokyne_Strata/Sorokyne_Strata.dmm

@@ -2795,7 +2795,7 @@
 	},
 /obj/structure/surface/table/reinforced/prison,
 /obj/item/device/mass_spectrometer,
-/obj/item/device/matter_decompiler,
+/obj/item/prop/matter_decompiler,
 /turf/open/floor/strata/multi_tiles/southwest,
 /area/strata/ag/interior/outpost/canteen/personal_storage)
 "ake" = (