event_loop: remove deprecated run APIs

The APIs are not well suited for the `&dyn ApplicationHandler` model and
`Box<dyn EventLoop>` structure, thus remove them.

src/changelog/unreleased.md

@@ -44,6 +44,12 @@ changelog entry.
 
 - Reexport `raw-window-handle` versions 0.4 and 0.5 as `raw_window_handle_04` and `raw_window_handle_05`.
 
+### Removed
+
+- Remove `EventLoop::run`.
+- Remove `EventLoopExtRunOnDemand::run_on_demand`.
+- Remove `EventLoopExtPumpEvents::pump_events`.
+
 ### Fixed
 
 - On macOS, fix panic on exit when dropping windows outside the event loop.

src/changelog/v0.30.md

@@ -65,7 +65,7 @@
   `Fn`. The semantics are mostly the same, given that the capture list of the
   closure is your new `State`. Consider the following code:
 
-  ```rust,no_run
+  ```rust,no_run,ignore
   use winit::event::Event;
   use winit::event_loop::EventLoop;
   use winit::window::Window;