Clean plugins

src/app/mod.rs

@@ -91,6 +91,7 @@ impl App {
         Self::build(variables, dict, rng, false)
     }
 
+    #[allow(dead_code)]
     pub fn new_plugin(variables: Variables, dict: Dictionary, rng: Rng) -> Self {
         Self::build(variables, dict, rng, true)
     }