Remove deprecated defaults() function

boot.php

@@ -322,47 +322,6 @@ function get_app()
 	return BaseObject::getApp();
 }
 
-/**
- * Return the provided variable value if it exists and is truthy or the provided
- * default value instead.
- *
- * Works with initialized variables and potentially uninitialized array keys
- *
- * Usages:
- * - defaults($var, $default)
- * - defaults($array, 'key', $default)
- *
- * @param array $args
- * @brief Returns a defaut value if the provided variable or array key is falsy
- * @return mixed
- * @deprecated since version 2019.06, use native coalesce operator (??) instead
- */
-function defaults(...$args)
-{
-	if (count($args) < 2) {
-		throw new BadFunctionCallException('defaults() requires at least 2 parameters');
-	}
-	if (count($args) > 3) {
-		throw new BadFunctionCallException('defaults() cannot use more than 3 parameters');
-	}
-	if (count($args) === 3 && is_null($args[1])) {
-		throw new BadFunctionCallException('defaults($arr, $key, $def) $key is null');
-	}
-
-	// The default value always is the last argument
-	$return = array_pop($args);
-
-	if (count($args) == 2 && is_array($args[0]) && !empty($args[0][$args[1]])) {
-		$return = $args[0][$args[1]];
-	}
-
-	if (count($args) == 1 && !empty($args[0])) {
-		$return = $args[0];
-	}
-
-	return $return;
-}
-
 /**
  * @brief Used to end the current process, after saving session state.
  * @deprecated