Simplify

examples/hello_world/src/main.rs

@@ -1,6 +1,6 @@
 #![cfg_attr(not(debug_assertions), windows_subsystem = "windows")] // hide console window on Windows in release
 
-use eframe::egui::{self, ViewportRender};
+use eframe::egui;
 
 fn main() -> Result<(), eframe::Error> {
     env_logger::init(); // Log to stderr (if you run with `RUST_LOG=debug`).
@@ -30,12 +30,7 @@ impl Default for MyApp {
 }
 
 impl eframe::App for MyApp {
-    fn update(
-        &mut self,
-        ctx: &egui::Context,
-        _frame: &mut eframe::Frame,
-        _: Option<&ViewportRender>,
-    ) {
+    fn update(&mut self, ctx: &egui::Context, _frame: &mut eframe::Frame) {
         egui::CentralPanel::default().show(ctx, |ui| {
             ui.heading("My egui Application");
             ui.horizontal(|ui| {