Revert "add api data() for inbound_lane (#1373)" (#1375)

This reverts commit 9e3cb0c.

Author: svyatonik

bridges/modules/messages/src/inbound_lane.rs

@@ -71,11 +71,6 @@ impl<S: InboundLaneStorage> InboundLane<S> {
 		InboundLane { storage }
 	}
 
-	/// Get this lane data
-	pub fn data(&self) -> InboundLaneData<S::Relayer> {
-		self.storage.data()
-	}
-
 	/// Receive state of the corresponding outbound lane.
 	pub fn receive_state_update(
 		&mut self,