Remove uneeded returns

lib/public/user.php

@@ -73,12 +73,10 @@ class User {
 	}
 	/**
 	 * @brief Loggs the user out including all the session data
-	 * @returns true
-	 *
 	 * Logout, destroys session
 	 */
 	public static function logout() {
-		return \OC_USER::logout();
+		\OC_USER::logout();
 	}
 
 	/**

lib/user.php

@@ -267,7 +267,6 @@ class OC_User {
 
 	/**
 	 * @brief Logs the current user out and kills all the session data
-	 * @returns true
 	 *
 	 * Logout, destroys session
 	 */
@@ -276,7 +275,6 @@ class OC_User {
 		session_unset();
 		session_destroy();
 		OC_User::unsetMagicInCookie();
-		return true;
 	}
 
 	/**