remove unneccessary safety requirement

Author: jakobhellermann

crates/bevy_ecs/src/storage/mod.rs

@@ -30,7 +30,6 @@ impl Storages {
     ///
     /// # Safety
     /// - `entity_location` must be within bounds of the given archetype and `entity` must exist inside
-    /// - `component_id` must be valid
     /// - `Archetypes` and `Components` must come from the world this of this `Storages`
     /// - the caller must ensure that no aliasing rules are violated
     #[inline]
@@ -43,6 +42,7 @@ impl Storages {
         location: EntityLocation,
     ) -> Option<(Ptr<'_>, &UnsafeCell<ComponentTicks>)> {
         let component_id = components.get_id(type_id)?;
+        // SAFETY: component_id is valid, the rest is deferred to caller
         self.get_component_and_ticks(archetypes, components, component_id, entity, location)
     }
 
@@ -102,6 +102,7 @@ impl Storages {
         location: EntityLocation,
     ) -> Option<Ptr<'_>> {
         let component_id = components.get_id(type_id)?;
+        // SAFETY: component_id is valid, the rest is deferred to caller
         self.get_component(archetypes, components, component_id, entity, location)
     }
 
@@ -157,6 +158,7 @@ impl Storages {
         location: EntityLocation,
     ) -> Option<&UnsafeCell<ComponentTicks>> {
         let component_id = components.get_id(type_id)?;
+        // SAFETY: component_id is valid, the rest is deferred to caller
         self.get_ticks(archetypes, components, component_id, entity, location)
     }