Merge pull request #5473 from Anewbe/dirt_part_two

Various things and floors no longer associate with dirt

code/modules/mining/mine_turfs.dm

@@ -18,6 +18,8 @@ var/list/mining_overlay_cache = list()
 	blocks_air = 1
 	temperature = T0C
 
+	can_dirty = FALSE
+
 	var/ore/mineral
 	var/sand_dug
 	var/mined_ore = 0

code/modules/mob/living/bot/bot.dm

@@ -7,6 +7,8 @@
 	universal_speak = 1
 	density = 0
 
+	makes_dirt = FALSE	// No more dirt from Beepsky
+
 	var/obj/item/weapon/card/id/botcard = null
 	var/list/botcard_access = list()
 	var/on = 1

code/modules/mob/living/simple_animal/slime/slime.dm

@@ -11,6 +11,8 @@
 	var/icon_state_override = null // Used for special slime appearances like the rainbow slime.
 	pass_flags = PASSTABLE
 
+	makes_dirt = FALSE	// Goop
+
 	speak_emote = list("chirps")
 
 	maxHealth = 150