Simple mob combat changes. (#22797)

Simple mobs don't dodge backwards anymore, it just doesn't really work
as an engaging mechanic.

To-do:

- [ ] Add armour to a bunch of simple mobs.
- [ ] Maybe make simple mobs attack with actual weapons instead of
magical damage numbers.
- [ ] Fix simplemob movement glide.

Co-authored-by: Matt Atlas <liermattia@gmail.com>

code/modules/holodeck/HolodeckObjects.dm

@@ -481,7 +481,6 @@
 	meat_amount = 0
 	meat_type = null
 	light_range = 2
-	smart_melee = TRUE
 	blood_overlay_icon = null
 	blood_type = null