lavfi: drop internal.h

All that remains in it are things that belong in avfilter_internal.h.

Move them there and remove internal.h

libavfilter/dnn/dnn_backend_openvino.c

@@ -31,7 +31,6 @@
 #include "libavutil/opt.h"
 #include "libavutil/avstring.h"
 #include "libavutil/detection_bbox.h"
-#include "../internal.h"
 #include "safe_queue.h"
 #if HAVE_OPENVINO2
 #include <openvino/c/openvino.h>

libavfilter/dnn/dnn_backend_tf.c

@@ -30,7 +30,6 @@
 #include "libavutil/mem.h"
 #include "libavutil/opt.h"
 #include "libavcodec/defs.h"
-#include "../internal.h"
 #include "dnn_io_proc.h"
 #include "dnn_backend_common.h"
 #include "safe_queue.h"

libavfilter/dnn/dnn_backend_torch.cpp

@@ -27,7 +27,6 @@
 #include <torch/script.h>
 
 extern "C" {
-#include "../internal.h"
 #include "dnn_io_proc.h"
 #include "dnn_backend_common.h"
 #include "libavutil/opt.h"

libavfilter/dnn/dnn_interface.c

@@ -29,7 +29,6 @@
 #include "libavutil/opt.h"
 
 #include "libavfilter/filters.h"
-#include "libavfilter/internal.h"
 
 extern const DNNModule ff_dnn_backend_openvino;
 extern const DNNModule ff_dnn_backend_tf;