fix a merge error

Author: joseph-gio

crates/bevy_ecs/src/schedule/state.rs

@@ -11,8 +11,6 @@ use std::{
     hash::Hash,
     marker::PhantomData,
 };
-// Required for derive macros
-use crate as bevy_ecs;
 
 pub trait StateData: Send + Sync + Clone + Eq + Debug + Hash + 'static {}
 impl<T> StateData for T where T: Send + Sync + Clone + Eq + Debug + Hash + 'static {}