fix some warnings

hui-examples/examples/ui_test_6.rs

@@ -1,5 +1,4 @@
 use hui::{
-  color, size,
   draw::TextureFormat,
   signal::Signal,
   layout::{Alignment, Direction},
@@ -8,10 +7,10 @@ use hui::{
     text::Text,
     image::Image,
     br::Br,
-    interactable::ElementInteractableExt,
     slider::Slider,
     UiElementExt,
   },
+  size,
 };
 
 enum CounterSignal {

hui/src/input.rs

@@ -3,8 +3,8 @@
 use std::hash::{Hash, Hasher};
 use glam::Vec2;
 use hashbrown::HashMap;
-use nohash_hasher::{BuildNoHashHasher, NoHashHasher};
-use tinyset::{Fits64, Set64, SetU32};
+use nohash_hasher::BuildNoHashHasher;
+use tinyset::{Fits64, Set64};
 use crate::{event::{EventQueue, UiEvent}, rectangle::Rect};
 
 /// Represents a mouse button.