Fixing up "using" statements

Assets/AppPrefabs/Support/Scripts/AttachToController.cs

@@ -2,7 +2,6 @@
 // Licensed under the MIT License. See LICENSE in the project root for license information.
 
 using HoloToolkit.Unity.InputModule;
-using System;
 using UnityEngine;
 using UnityEngine.XR.WSA.Input;
 

Assets/AppPrefabs/Support/Scripts/BrushSelector.cs

@@ -4,7 +4,6 @@
 using HoloToolkit.Unity.Controllers;
 using HoloToolkit.Unity.Design;
 using HoloToolkit.Unity.InputModule;
-using System.Collections;
 using UnityEngine;
 using UnityEngine.XR.WSA.Input;
 

Assets/AppPrefabs/Support/Scripts/ColorPickerWheel.cs

@@ -2,7 +2,6 @@
 // Licensed under the MIT License. See LICENSE in the project root for license information.
 
 using HoloToolkit.Unity.Controllers;
-using HoloToolkit.Unity.InputModule;
 using UnityEngine;
 using UnityEngine.XR.WSA.Input;
 

Assets/AppPrefabs/Support/Scripts/ObjectSpawner.cs

@@ -2,7 +2,6 @@
 // Licensed under the MIT License. See LICENSE in the project root for license information.
 
 using HoloToolkit.Unity.Controllers;
-using HoloToolkit.Unity.InputModule;
 using System;
 using System.Collections;
 using UnityEngine;

Assets/AppPrefabs/Support/Scripts/PointerInput.cs

@@ -1,7 +1,6 @@
 // Copyright (c) Microsoft Corporation. All rights reserved.
 // Licensed under the MIT License. See LICENSE in the project root for license information.
 
-using HoloToolkit.Unity.InputModule;
 using UnityEngine;
 using UnityEngine.XR.WSA.Input;