Remove unnecessary return

inc/Engine/Optimization/DynamicLists/DynamicLists.php

@@ -317,18 +317,12 @@ public function get_lrc_exclusions(): array {
 	/**
 	 * Updates the lists from JSON files
 	 *
-	 * @return array
+	 * @return void
 	 */
 	public function update_lists_from_files() {
 		foreach ( $this->providers as $provider ) {
 			$provider->data_manager->remove_lists_cache();
 			$provider->data_manager->get_lists();
 		}
-
-		return [
-			'success' => true,
-			'data'    => '',
-			'message' => __( 'Lists are successfully updated from JSON files.', 'rocket' ),
-		];
 	}
 }