lavfi: Drop deprecated filter initialization

Deprecated in 03/2013.

libavfilter/avfilter.c

@@ -561,13 +561,6 @@ static int process_unnamed_options(AVFilterContext *ctx, AVDictionary **options,
     return 0;
 }
 
-#if FF_API_AVFILTER_INIT_FILTER
-int avfilter_init_filter(AVFilterContext *filter, const char *args, void *opaque)
-{
-    return avfilter_init_str(filter, args);
-}
-#endif
-
 int avfilter_init_dict(AVFilterContext *ctx, AVDictionary **options)
 {
     int ret = 0;

libavfilter/avfilter.h

@@ -479,21 +479,6 @@ attribute_deprecated
 AVFilter **av_filter_next(AVFilter **filter);
 #endif
 
-#if FF_API_AVFILTER_INIT_FILTER
-/**
- * Initialize a filter.
- *
- * @param filter the filter to initialize
- * @param args   A string of parameters to use when initializing the filter.
- *               The format and meaning of this string varies by filter.
- * @param opaque Any extra non-string data needed by the filter. The meaning
- *               of this parameter varies by filter.
- * @return       zero on success
- */
-attribute_deprecated
-int avfilter_init_filter(AVFilterContext *filter, const char *args, void *opaque);
-#endif
-
 /**
  * Initialize a filter with the supplied parameters.
  *

libavfilter/version.h

@@ -49,9 +49,6 @@
  * the public API and may change, break or disappear at any time.
  */
 
-#ifndef FF_API_AVFILTER_INIT_FILTER
-#define FF_API_AVFILTER_INIT_FILTER         (LIBAVFILTER_VERSION_MAJOR < 7)
-#endif
 #ifndef FF_API_OLD_FILTER_REGISTER
 #define FF_API_OLD_FILTER_REGISTER          (LIBAVFILTER_VERSION_MAJOR < 7)
 #endif