From 45f0e8b6fc99a3e959100890b0a8f5854df4ccac Mon Sep 17 00:00:00 2001
From: sta <sta.blockhead@gmail.com>
Date: Tue, 8 Aug 2017 17:13:51 +0900
Subject: [PATCH] [Modify] Remove it

---
 websocket-sharp/Ext.cs | 5 -----
 1 file changed, 5 deletions(-)

diff --git a/websocket-sharp/Ext.cs b/websocket-sharp/Ext.cs
index 5694f34a..93c2c326 100644
--- a/websocket-sharp/Ext.cs
+++ b/websocket-sharp/Ext.cs
@@ -184,11 +184,6 @@ namespace WebSocketSharp
                : null;
     }
 
-    internal static string CheckIfValidSessionID (this string id)
-    {
-      return id == null || id.Length == 0 ? "'id' is null or empty." : null;
-    }
-
     internal static bool CheckWaitTime (this TimeSpan time, out string message)
     {
       message = null;