Code cleanup.

Assets/Cryville/Crtr/Chart.cs

@@ -1,12 +1,10 @@
 using Cryville.Common;
 using Cryville.Common.Collections.Specialized;
-using Cryville.Common.Pdt;
 using Newtonsoft.Json;
 using System;
 using System.Collections.Generic;
 using System.ComponentModel;
 using System.Linq;
-using System.Text.RegularExpressions;
 using UnsafeIL;
 
 namespace Cryville.Crtr {
@@ -218,10 +216,6 @@ namespace Cryville.Crtr {
 		}
 
 		public class Motion : ChartEvent {
-			static readonly PdtFragmentInterpreter _itor = new PdtFragmentInterpreter();
-			static readonly PropOp _vecop = new VectorOp(v => _vecbuf = v);
-			static float[] _vecbuf;
-
 #pragma warning disable IDE1006
 			[JsonRequired]
 			public string motion {