Releases the event-handling client attached in the WebBrowser.CreateSink method from the underlying ActiveX control.
This method is useful if you are familiar with OLE development using the unmanaged WebBrowser ActiveX control and you want to extend the functionality of the Windows Forms System.Windows.Forms.WebBrowser control, which is a managed wrapper for the ActiveX control. You can use this extensibility to implement events from the ActiveX control that are not provided by the wrapper control.