From a6180ddc6e3c40bc6ef0896ba34e67709c441f5c Mon Sep 17 00:00:00 2001
From: Dixin <dixinyan@live.com>
Date: Thu, 18 Feb 2021 16:12:32 -0800
Subject: [PATCH] Implement dotnet/runtime#28776: LINQ APIs for index and
 range. Update unit tests.

---
 src/libraries/System.Linq/tests/ElementAtTests.cs | 1 -
 1 file changed, 1 deletion(-)

diff --git a/src/libraries/System.Linq/tests/ElementAtTests.cs b/src/libraries/System.Linq/tests/ElementAtTests.cs
index c833c045786727..8644a7df0d1e9b 100644
--- a/src/libraries/System.Linq/tests/ElementAtTests.cs
+++ b/src/libraries/System.Linq/tests/ElementAtTests.cs
@@ -1,7 +1,6 @@
 // Licensed to the .NET Foundation under one or more agreements.
 // The .NET Foundation licenses this file to you under the MIT license.
 
-using System.Collections;
 using System.Collections.Generic;
 using System.Collections.Immutable;
 using Xunit;