yoda: cargo fix --lib across all crates — drop ~115 trivial warnings

Auto-applied suggestions (unused imports, _-prefixed unused params,
redundant mutability) on iced_core, iced_widget, iced_runtime, iced_winit,
iced_wgpu, iced_graphics, iced_tiny_skia. From 170 warnings down to 55.

Leyoda 2026 – GPLv3

winit/src/platform_specific/mod.rs

@@ -1,14 +1,11 @@
 //! Wayland specific shell
 //!
 
-use std::{borrow::Cow, collections::HashMap, sync::Arc};
+use std::collections::HashMap;
 
-#[cfg(all(feature = "cctk", target_os = "linux"))]
-use cctk::sctk::reexports::client::Connection;
 use iced_graphics::{Compositor, compositor};
 use iced_runtime::{
-    core::{Vector, window},
-    platform_specific, user_interface,
+    core::{Vector, window}, user_interface,
 };
 use winit::raw_window_handle::HasWindowHandle;
 
@@ -17,8 +14,6 @@ pub mod wayland;
 
 #[cfg(all(feature = "cctk", target_os = "linux"))]
 pub use wayland::*;
-#[cfg(all(feature = "cctk", target_os = "linux"))]
-use wayland_backend::client::Backend;
 
 use crate::{CreateCompositor, Program, WindowManager};