avfilter/internal: Don't include libavcodec/(avcodec|internal).h

The reasons for including them don't exist any longer: ff_tlog() has
been moved to libavutil/internal.h and FF_QSCALE_TYPE_* has been moved
to qp_table.h.

Reviewed-by: Nicolas George <george@nsup.org>
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>

libavfilter/internal.h

@@ -30,8 +30,6 @@
 #include "framequeue.h"
 #include "version.h"
 #include "video.h"
-#include "libavcodec/avcodec.h"
-#include "libavcodec/internal.h"
 
 typedef struct AVFilterCommand {
     double time;                ///< time expressed in seconds