removes a bunch of unused/bad helpers (#48969)

* a commit

* Update code/controllers/subsystem/persistence.dm

Co-Authored-By: Emmett Gaines <ninjanomnom@gmail.com>

* Update code/__HELPERS/text.dm

Co-Authored-By: Emmett Gaines <ninjanomnom@gmail.com>

* Update advance.dm

* Update security_officer.dm

* Update text.dm

* Update unsorted.dm

Co-authored-by: Emmett Gaines <ninjanomnom@gmail.com>

code/controllers/subsystem/persistence.dm

@@ -155,7 +155,7 @@ SUBSYSTEM_DEF(persistence)
 
 		var/list/chosen_trophy = trophy_data
 
-		if(!chosen_trophy || isemptylist(chosen_trophy)) //Malformed
+		if(!length(chosen_trophy)) //Malformed
 			continue
 
 		var/path = text2path(chosen_trophy["path"]) //If the item no longer exist, this returns null

code/controllers/subsystem/ticker.dm

@@ -107,7 +107,7 @@ SUBSYSTEM_DEF(ticker)
 				continue
 		music -= S
 
-	if(isemptylist(music))
+	if(!length(music))
 		music = world.file2list(ROUND_START_MUSIC_LIST, "\n")
 		login_music = pick(music)
 	else