add clone to macro

src/brightness_grid.rs

@@ -23,11 +23,6 @@ impl BrightnessGrid {
         ).unwrap())
     }
 
-    #[uniffi::constructor]
-    pub fn clone(other: &Arc<Self>) -> Arc<Self> {
-        Self::internal_new(other.actual.read().unwrap().clone())
-    }
-
     pub fn set(&self, x: u64, y: u64, value: u8) {
         self.actual.write().unwrap().set(
             x as usize,