[NUI.Scene3D] Remove build warning

Signed-off-by: Eunki Hong <eunkiki.hong@samsung.com>

diff --git a/src/Tizen.NUI.Scene3D/src/public/ModelComponents/ModelNode.cs b/src/Tizen.NUI.Scene3D/src/public/ModelComponents/ModelNode.cs
index 224743604430e1b038d1ced9cb90bf7c6aa09a16..6f739c7888f737cf2b781e2ba4aafdad7cbfdd10 100755 (executable)
--- a/src/Tizen.NUI.Scene3D/src/public/ModelComponents/ModelNode.cs
+++ b/src/Tizen.NUI.Scene3D/src/public/ModelComponents/ModelNode.cs
@@ -19,7 +19,6 @@ using System;
 using System.Collections.Generic;
 using System.Runtime.InteropServices;
 using System.ComponentModel;
-using System.Collections.Generic;
 using Tizen.NUI;
 using Tizen.NUI.Binding;
 using Tizen.NUI.BaseComponents;