lavc: Drop deprecated avctx codec name

Deprecated in 04/2014.

libavcodec/avcodec.h

@@ -1219,13 +1219,6 @@ typedef struct AVCodecContext {
 
     enum AVMediaType codec_type; /* see AVMEDIA_TYPE_xxx */
     const struct AVCodec  *codec;
-#if FF_API_CODEC_NAME
-    /**
-     * @deprecated this field is not used for anything in libavcodec
-     */
-    attribute_deprecated
-    char             codec_name[32];
-#endif
     enum AVCodecID     codec_id; /* see AV_CODEC_ID_xxx */
 
     /**

libavcodec/version.h

@@ -47,9 +47,6 @@
  * the public API and may change, break or disappear at any time.
  */
 
-#ifndef FF_API_CODEC_NAME
-#define FF_API_CODEC_NAME        (LIBAVCODEC_VERSION_MAJOR < 58)
-#endif
 #ifndef FF_API_AFD
 #define FF_API_AFD               (LIBAVCODEC_VERSION_MAJOR < 58)
 #endif