remove context from ui (again) and create weird trait for it

src/render/mod.rs

@@ -57,7 +57,7 @@ impl UiRenderer {
         }
     }
 
-    pub fn update<Ctx>(&mut self, device: &Device, queue: &Queue, ui: &mut Ui<Ctx>) {
+    pub fn update(&mut self, device: &Device, queue: &Queue, ui: &mut Ui) {
         self.active.clear();
         for (i, ulayer) in ui.layers.iter_mut() {
             self.active.push(i);