ffmpegdecoder: removed all old code to clean up

app/codec/ffmpeg/ffmpegdecoder.h

@@ -34,8 +34,6 @@ extern "C" {
 #include "codec/waveoutput.h"
 #include "project/item/footage/videostream.h"
 
-//#define USE_VIDEO_INDEX
-
 /**
  * @brief A Decoder derivative that wraps FFmpeg functions as on Olive decoder
  */
@@ -117,12 +115,8 @@ private:
 
   AVPacket* pkt_;
 
-#ifdef USE_VIDEO_INDEX
-  AVFrame* frame_;
-#else
   AVFrame* frames_[2];
   AVFrame* last_retrieved_frame_;
-#endif
 
   AVDictionary* opts_;