Removes a lot of redundant non-modular changes and maybe fixes cleanbots (#6615)

* oof

* Update _ai_controller.dm

* no need for this anymore

code/modules/admin/view_variables/mass_edit_variables.dm

@@ -117,7 +117,7 @@
 			var/list/varsvars = vv_parse_text(O, new_value)
 			var/pre_processing = new_value
 			var/unique
-			if (varsvars && varsvars.len)
+			if (varsvars?.len)
 				unique = tgui_alert(usr, "Process vars unique to each instance, or same for all?", "Variable Association", list("Unique", "Same"))
 				if(unique == "Unique")
 					unique = TRUE

code/modules/admin/view_variables/modify_variables.dm

@@ -23,7 +23,7 @@ GLOBAL_PROTECT(VVpixelmovement)
 	var/list/subtypes = subtypesof(type)
 	if (!subtypes || !subtypes.len)
 		return FALSE
-	if (subtypes && subtypes.len)
+	if (subtypes?.len)
 		switch(tgui_alert(usr,"Strict object type detection?", "Type detection", list("Strictly this type","This type and subtypes", "Cancel")))
 			if("Strictly this type")
 				return FALSE