Remove dead module link

Author: alice-i-cecile

crates/bevy_ecs/src/lib.rs

@@ -14,7 +14,6 @@ pub mod query;
 #[cfg(feature = "bevy_reflect")]
 pub mod reflect;
 pub mod schedule;
-pub mod schedule_v3;
 pub mod storage;
 pub mod system;
 pub mod world;