MT#55447 remove unneeded include

This include only serves to define one type, which is used only as a
pointer. Use an empty typedef declaration instead.

Change-Id: I7d2cc8b97303b9363a5bfe363fffeea09ee56686

lib/rtplib.h

@@ -3,7 +3,11 @@
 
 #include <stdint.h>
 #include "str.h"
-#include "codeclib.h"
+
+
+
+struct codec_def_s;
+typedef struct codec_def_s codec_def_t;
 
 
 struct rtp_header {