Remove DevToolsUrl property (no longer used in 1750)

Author: amaitland

CefSharp/IWebBrowser.cs

@@ -168,11 +168,6 @@ public interface IWebBrowser : IDisposable
         /// binding.</remarks>
         double ZoomLevel { get; set; }
 
-        /// <summary>
-        /// Url which can be loaded in a browser control to view the dev tools
-        /// </summary>
-        string DevToolsUrl { get; }
-
         /// <summary>
         /// Search for text within the current page.
         /// </summary>