avm2: Remove unused and unnecessary `init_slot`

core/src/avm2/object.rs

@@ -597,13 +597,6 @@ pub trait TObject<'gc>: 'gc + Collect + Debug + Into<Object<'gc>> + Clone + Copy
         base.set_slot(id, value, activation.gc())
     }
 
-    /// Initialize a slot by its index.
-    fn init_slot(self, id: u32, value: Value<'gc>, mc: &Mutation<'gc>) -> Result<(), Error<'gc>> {
-        let mut base = self.base_mut(mc);
-
-        base.init_slot(id, value, mc)
-    }
-
     /// Call a method by its index.
     ///
     /// This directly corresponds with the AVM2 operation `callmethod`.

core/src/avm2/object/script_object.rs

@@ -286,21 +286,6 @@ impl<'gc> ScriptObjectData<'gc> {
         }
     }
 
-    /// Initialize a slot by its index.
-    pub fn init_slot(
-        &mut self,
-        id: u32,
-        value: Value<'gc>,
-        _mc: &Mutation<'gc>,
-    ) -> Result<(), Error<'gc>> {
-        if let Some(slot) = self.slots.get_mut(id as usize) {
-            *slot = value;
-            Ok(())
-        } else {
-            Err(format!("Slot index {id} out of bounds!").into())
-        }
-    }
-
     pub fn install_instance_slots(&mut self) {
         use std::ops::Deref;
         let vtable = self.vtable.unwrap();