Remove window::change_title since it's redundant

Applications can change title declaratively.

runtime/src/window.rs

@@ -73,9 +73,6 @@ pub enum Action {
     /// Get the current [`Mode`] of the window.
     GetMode(Id, oneshot::Sender<Mode>),
 
-    /// Change the title of the window.
-    ChangeTitle(Id, String),
-
     /// Toggle the window to maximized or back
     ToggleMaximize(Id),
 
@@ -388,11 +385,6 @@ pub fn change_level<T>(id: Id, level: Level) -> Task<T> {
     task::effect(crate::Action::Window(Action::ChangeLevel(id, level)))
 }
 
-/// Changes the title of the window.
-pub fn change_title<T>(id: Id, title: String) -> Task<T> {
-    task::effect(crate::Action::Window(Action::ChangeTitle(id, title)))
-}
-
 /// Set the inner maximum size of the window.
 pub fn set_max_size<T>(id: Id, size: Option<Size>) -> Task<T> {
     task::effect(crate::Action::Window(Action::SetMaxSize(id, size)))

winit/src/program.rs

@@ -1321,11 +1321,6 @@ fn run_action<P, C>(
                     }));
                 }
             }
-            window::Action::ChangeTitle(id, title) => {
-                if let Some(window) = window_manager.get_mut(id) {
-                    window.raw.set_title(&title);
-                }
-            }
             window::Action::SetResizable(id, resizable) => {
                 if let Some(window) = window_manager.get_mut(id) {
                     window.raw.set_resizable(resizable);