VP9_COMMON: remove unused framerate/bitrate

+ VP8_COMMON: place them under CONFIG_POSTPROC_VISUALIZER

Change-Id: I2702d5a3e1134b9c5f7ddc14b4173955a400f2cf

vp8/common/onyxc_int.h

@@ -165,8 +165,10 @@ typedef struct VP8Common
 #ifdef PACKET_TESTING
     VP8_HEADER oh;
 #endif
+#if CONFIG_POSTPROC_VISUALIZER
     double bitrate;
     double framerate;
+#endif
 
 #if CONFIG_MULTITHREAD
     int processor_core_count;

vp9/common/vp9_onyxc_int.h

@@ -255,9 +255,6 @@ typedef struct VP9Common {
   int near_boffset[3];
   int version;
 
-  double bitrate;
-  double framerate;
-
 #if CONFIG_POSTPROC
   struct postproc_state  postproc_state;
 #endif