From e330b69cb98eb9df7f8ae81a01afbdf263180079 Mon Sep 17 00:00:00 2001
From: Niklas Adolfsson <niklasadolfsson1@gmail.com>
Date: Tue, 14 May 2019 17:07:13 +0200
Subject: [PATCH] fix(redundant import) (#2582)

Fixes warning: the item `HashSet` is imported redundantly
---
 substrate/core/network/src/sync/extra_requests.rs | 2 --
 1 file changed, 2 deletions(-)

diff --git a/substrate/core/network/src/sync/extra_requests.rs b/substrate/core/network/src/sync/extra_requests.rs
index efe4244449..3ebf2b2509 100644
--- a/substrate/core/network/src/sync/extra_requests.rs
+++ b/substrate/core/network/src/sync/extra_requests.rs
@@ -304,8 +304,6 @@ impl<B: BlockT, Essence: ExtraRequestsEssence<B>> ExtraRequests<B, Essence> {
 			return Ok(());
 		}
 
-		use std::collections::HashSet;
-
 		self.tree.finalize(best_finalized_hash, best_finalized_number, &is_descendent_of)?;
 
 		let roots = self.tree.roots().collect::<HashSet<_>>();