Remove private deprecated OC_Helper::linkToRoute

lib/private/helper.php

@@ -53,19 +53,6 @@ use Symfony\Component\Process\ExecutableFinder;
 class OC_Helper {
 	private static $templateManager;
 
-	/**
-	 * Creates an url using a defined route
-	 * @param string $route
-	 * @param array $parameters with param=>value, will be appended to the returned url
-	 * @return string the url
-	 * @deprecated Use \OC::$server->getURLGenerator()->linkToRoute($route, $parameters)
-	 *
-	 * Returns a url to the given app and file.
-	 */
-	public static function linkToRoute($route, $parameters = array()) {
-		return OC::$server->getURLGenerator()->linkToRoute($route, $parameters);
-	}
-
 	/**
 	 * Creates an absolute url
 	 * @param string $app app