Fix new warnings

src/input.rs

@@ -457,12 +457,6 @@ struct PersistedGamepadMapping {
     default_axes: Vec<(Code, (VBKey, VBKey))>,
 }
 
-#[derive(Serialize, Deserialize)]
-pub struct Shortcut {
-    pub shortcut: KeyboardShortcut,
-    pub command: Command,
-}
-
 #[derive(Clone, Copy, Serialize, Deserialize, PartialEq, Eq, Hash)]
 pub enum Command {
     OpenRom,

src/memory.rs

@@ -50,11 +50,11 @@ impl MemoryClient {
 }
 
 fn aligned_memory(start: u32, length: usize) -> BoxBytes {
-    if start % 4 == 0 && length % 4 == 0 {
+    if start.is_multiple_of(4) && length.is_multiple_of(4) {
         let memory = vec![0u32; length / 4].into_boxed_slice();
         return bytemuck::box_bytes_of(memory);
     }
-    if start % 2 == 0 && length % 2 == 0 {
+    if start.is_multiple_of(2) && length.is_multiple_of(2) {
         let memory = vec![0u16; length / 2].into_boxed_slice();
         return bytemuck::box_bytes_of(memory);
     }

src/window/vip/chardata.rs

@@ -274,12 +274,6 @@ impl AppWindow for CharacterDataWindow {
     }
 }
 
-#[derive(Serialize, Deserialize, Clone, PartialEq, Eq, Hash)]
-enum CharDataResource {
-    Character { palette: Palette, index: usize },
-    CharacterData { palette: Palette },
-}
-
 #[derive(Clone, Default, PartialEq, Eq)]
 struct CharDataParams {
     palette: Palette,