lavfi: remove hqdn3d libmpcodecs wrapper.

The native filter was ported from the MPlayer project when the mp
wrapper didn't even exist, and when mp=hqdn3d was added, it was already
obsolete.

doc/filters.texi

@@ -2640,7 +2640,6 @@ The list of the currently supported filters follows:
 @item fspp
 @item geq
 @item harddup
-@item hqdn3d
 @item il
 @item ilpack
 @item ivtc

libavfilter/Makefile

@@ -173,7 +173,6 @@ OBJS-$(CONFIG_MP_FILTER) += libmpcodecs/vf_fixpts.o
 OBJS-$(CONFIG_MP_FILTER) += libmpcodecs/vf_fspp.o
 OBJS-$(CONFIG_MP_FILTER) += libmpcodecs/vf_geq.o
 OBJS-$(CONFIG_MP_FILTER) += libmpcodecs/vf_harddup.o
-OBJS-$(CONFIG_MP_FILTER) += libmpcodecs/vf_hqdn3d.o
 OBJS-$(CONFIG_MP_FILTER) += libmpcodecs/vf_il.o
 OBJS-$(CONFIG_MP_FILTER) += libmpcodecs/vf_ilpack.o
 OBJS-$(CONFIG_MP_FILTER) += libmpcodecs/vf_ivtc.o

libavfilter/version.h

@@ -30,7 +30,7 @@
 
 #define LIBAVFILTER_VERSION_MAJOR  3
 #define LIBAVFILTER_VERSION_MINOR  21
-#define LIBAVFILTER_VERSION_MICRO 105
+#define LIBAVFILTER_VERSION_MICRO 106
 
 #define LIBAVFILTER_VERSION_INT AV_VERSION_INT(LIBAVFILTER_VERSION_MAJOR, \
                                                LIBAVFILTER_VERSION_MINOR, \

libavfilter/vf_mp.c

@@ -146,7 +146,6 @@ extern const vf_info_t vf_info_fspp;
 extern const vf_info_t vf_info_geq;
 extern const vf_info_t vf_info_halfpack;
 extern const vf_info_t vf_info_harddup;
-extern const vf_info_t vf_info_hqdn3d;
 extern const vf_info_t vf_info_il;
 extern const vf_info_t vf_info_ilpack;
 extern const vf_info_t vf_info_ivtc;
@@ -196,7 +195,6 @@ static const vf_info_t* const filters[]={
     &vf_info_fspp,
     &vf_info_geq,
     &vf_info_harddup,
-    &vf_info_hqdn3d,
     &vf_info_il,
     &vf_info_ilpack,
     &vf_info_ivtc,