Removed unused events (#27145)

* Removed unused events

* removed unused inventory datum

* removed on_pipenet_tick

code/modules/admin/DB ban/functions.dm

@@ -106,17 +106,6 @@
 	to_chat(usr, "<span class='notice'>Ban saved to database.</span>")
 	message_admins("[key_name_admin(usr)] has added a [bantype_str] for [ckey] [(job)?"([job])":""] [(duration > 0)?"([duration] minutes)":""] with the reason: \"[reason]\" to the ban database.",1)
 
-	INVOKE_EVENT(on_ban,list(
-		"ckey"=ckey,
-		"computer_id"=computerid,
-		"reason"=reason,
-		"duration"=duration,
-		"ip"=ip,
-		"type"=bantype,
-		"job"=job,
-		"admin"=usr
-	))
-
 
 
 datum/admins/proc/DB_ban_unban(var/ckey, var/bantype, var/job = "")
@@ -319,13 +308,6 @@ datum/admins/proc/DB_ban_unban_by_id(var/id)
 		return
 	qdel(query_update)
 
-	INVOKE_EVENT(on_unban,list(
-		"id"=id,
-		"ckey"=pckey,
-
-		"admin"=src.owner
-	))
-
 /client/proc/DB_ban_panel()
 	set category = "Admin"
 	set name = "Banning Panel"