Remove AVFilter.next field, since it is not used and it is not going

to be used since the implementation of the new filter registration
system.

Originally committed as revision 20611 to svn://svn.ffmpeg.org/ffmpeg/trunk

libavfilter/avfilter.h

@@ -25,7 +25,7 @@
 #include "libavutil/avutil.h"
 
 #define LIBAVFILTER_VERSION_MAJOR  1
-#define LIBAVFILTER_VERSION_MINOR 10
+#define LIBAVFILTER_VERSION_MINOR 11
 #define LIBAVFILTER_VERSION_MICRO  0
 
 #define LIBAVFILTER_VERSION_INT AV_VERSION_INT(LIBAVFILTER_VERSION_MAJOR, \
@@ -425,11 +425,6 @@ typedef struct AVFilter
      * NULL_IF_CONFIG_SMALL() macro to define it.
      */
     const char *description;
-
-    /**
-     * The next registered filter, NULL if this is the last one.
-     */
-    struct AVFilter *next;
 } AVFilter;
 
 /** An instance of a filter */