Remove an unnecessary check

#3700 #3706
diff --git a/system/libraries/Calendar.php b/system/libraries/Calendar.php
index 42fa00a..f6a0c39 100644
--- a/system/libraries/Calendar.php
+++ b/system/libraries/Calendar.php
@@ -130,11 +130,7 @@
 	public function __construct($config = array())
 	{
 		$this->CI =& get_instance();
-
-		if ( ! isset($this->CI->lang->is_loaded['calendar_lang.php']))
-		{
-			$this->CI->lang->load('calendar');
-		}
+		$this->CI->lang->load('calendar');
 
 		empty($config) OR $this->initialize($config);