去掉obi，使用自写绳索

Assets/Obi/Scripts/Common/Blueprints/Constraints/Groups/ObiChainConstraintsData.cs

@@ -1,32 +0,0 @@
-using UnityEngine;
-using System.Collections;
-using System;
-
-namespace Obi
-{
-
-    public interface IChainConstraintsUser
-    {
-
-        bool chainConstraintsEnabled
-        {
-            get;
-            set;
-        }
-
-        float tightness
-        {
-            get;
-            set;
-        }
-    }
-
-    [Serializable]
-    public class ObiChainConstraintsData : ObiConstraints<ObiChainConstraintsBatch>
-    {
-        public override ObiChainConstraintsBatch CreateBatch(ObiChainConstraintsBatch source = null)
-        {
-            return new ObiChainConstraintsBatch();
-        }
-    }
-}