/Icon/ Folder cleansing crusade part, I think 4; post-wallening clean-up. (#85823)

Hello everybuddy, your number three rated coder-failure here to clean up
some mess. This PR accomplishes some of the more major structural clean
up changes I wanted to do with /obj/ folder, but decided to wait on
until wallening gets merged, and so, time has come. Several things to
still be done, although I know these cleaning PR's are quite a load, so
will wait for this one to get done with first.

## Why It's Good For The Game
Saner spriters, better sprites, less annoyance. Also deleted a whole
load of redundancy this time around, a lot of sprites which existed
simultaniously in two places now got exit their quantum superposition.

code/modules/mob/living/basic/minebots/minebot_ai.dm

@@ -281,7 +281,7 @@
 /datum/pet_command/automate_mining
 	command_name = "Automate mining"
 	command_desc = "Make your minebot automatically mine!"
-	radial_icon = 'icons/obj/mining.dmi'
+	radial_icon = 'icons/obj/mining_zones/equipment.dmi'
 	radial_icon_state = "pickaxe"
 	speech_commands = list("mine")
 	callout_type = /datum/callout_option/mine

code/modules/mob/living/basic/minebots/minebot_remote_control.dm

@@ -2,7 +2,7 @@
 /obj/item/minebot_remote_control
 	name = "Remote Control"
 	desc = "Requesting stratagem!"
-	icon = 'icons/obj/mining.dmi'
+	icon = 'icons/obj/mining_zones/equipment.dmi'
 	icon_state = "minebot_bomb_control"
 	item_flags = NOBLUDGEON
 	///are we currently primed to drop a bomb?