rtpengine: Remove unused struct fields

These two were copied directly from rtpproxy module but never used by
this module.

Signed-off-by: Peter Lemenkov <[email protected]>

src/modules/rtpengine/rtpengine.h

@@ -60,8 +60,6 @@ struct rtpp_node {
 	unsigned int		rn_weight;		/* for load balancing */
 	unsigned int		rn_displayed;		/* for delete at db reload */
 	unsigned int		rn_recheck_ticks;
-	int			rn_rep_supported;
-	int			rn_ptl_supported;
 	struct rtpp_node	*rn_next;
 };