Remove another flaky assertion (#2947)

# Description
Did not address one of the flaky assertions after @sunce86 [pointed it
out](#2944 (comment)).

crates/e2e/tests/e2e/order_cancellation.rs

@@ -244,10 +244,6 @@ async fn order_cancellation(web3: Web3) {
             .status,
         OrderStatus::Cancelled,
     );
-    assert_eq!(
-        services.get_order_status(&order_uids[2]).await.unwrap(),
-        orderbook::dto::order::Status::Cancelled,
-    );
 
     for uid in &order_uids {
         let events = crate::database::events_of_order(services.db(), uid).await;