avoid some clippy warnings

src/api2/config.rs

@@ -7,11 +7,7 @@ use crate::api_schema::router::*;
 pub mod datastore;
 
 pub fn router() -> Router {
-
-    let route = Router::new()
+    Router::new()
         .subdir("datastore", datastore::router())
-        .list_subdirs();
-   
-
-    route
+        .list_subdirs()
 }