Removed unused import.

Author: neogeek

Assets/Plugins/CandyCoded.GitStatus/Scripts/CustomEditor/Git.cs

@@ -3,7 +3,6 @@
 #if UNITY_EDITOR
 using System;
 using System.Collections.Generic;
-using System.IO;
 using System.Diagnostics;
 using System.Linq;
 using Debug = UnityEngine.Debug;