Remove unused functions from inc/function.php

strategy_first was left in as I suspect it's a userful example.

inc/functions.php

@@ -1107,60 +1107,6 @@ function checkWarning($board = false) {
 	}
 }
 
-
-
-
-
-function threadLocked($id) {
-	global $board;
-
-	if (event('check-locked', $id))
-		return true;
-
-	$query = prepare(sprintf("SELECT `locked` FROM ``posts_%s`` WHERE `id` = :id AND `thread` IS NULL LIMIT 1", $board['uri']));
-	$query->bindValue(':id', $id, PDO::PARAM_INT);
-	$query->execute() or error(db_error());
-
-	if (($locked = $query->fetchColumn()) === false) {
-		// Non-existant, so it can't be locked...
-		return false;
-	}
-
-	return (bool)$locked;
-}
-
-function threadSageLocked($id) {
-	global $board;
-
-	if (event('check-sage-locked', $id))
-		return true;
-
-	$query = prepare(sprintf("SELECT `sage` FROM ``posts_%s`` WHERE `id` = :id AND `thread` IS NULL LIMIT 1", $board['uri']));
-	$query->bindValue(':id', $id, PDO::PARAM_INT);
-	$query->execute() or error(db_error());
-
-	if (($sagelocked = $query->fetchColumn()) === false) {
-		// Non-existant, so it can't be locked...
-		return false;
-	}
-
-	return (bool)$sagelocked;
-}
-
-function threadExists($id) {
-	global $board;
-
-	$query = prepare(sprintf("SELECT 1 FROM ``posts_%s`` WHERE `id` = :id AND `thread` IS NULL LIMIT 1", $board['uri']));
-	$query->bindValue(':id', $id, PDO::PARAM_INT);
-	$query->execute() or error(db_error());
-
-	if ($query->rowCount()) {
-		return true;
-	}
-
-	return false;
-}
-
 function insertFloodPost(array $post) {
 	global $board;