status.i4.v = window_remove_callback_c(type.i4.v, callback_id.i2.v)

	This function will remove a window modification callback registration
	which was previously made with window_add_callback_c.

	type		type of callback
			(WMNGR_PRE_CREATE_CALLBACK -> callback is invoked just
						      before a window is
			 WMNGR_CREATE_CALLBACK -> callback is invoked after
						  a window is created,
			 WMNGR_CHANGE_CALLBACK -> callback is invoked when
						  a window is modified,
			 WMNGR_PRE_DELETE_CALLBACK -> callback is invoked just
						      before a window is
			 WMNGR_DELETE_CALLBACK -> callback is invoked after
						  a window is deleted,
			 WMNGR_DELETE_REQUEST_CALLBACK -> callback is invoked
							  if a window delete
							  request is made,
			 WMNGR_CHANGE_PARAM_CALLBACK -> callback is invoked
							if a global parameter
							is modified)
	callback_id	callback registration ID which was returned
			by the window_add_callback_c routine

	This function returns status values as follows:

	OK			success
	CBS_INVARG		invalid callback type or ID requested
	CBS_NO_SUCH		requested ID does not exist

	This function requires the following include files:

	cbslib_h, acnet_errors_h

	Related functions:

	window_add_callback_c, window_callback_init,
	window_callback_term, window_register_function_c,
	window_unregister_function_c, intro_tv_windows

	C/C++ usage:

	short	callback_id;
	int	status;

	status = window_remove_callback_c(type,callback_id);