avdevice: remove deprecated FF_API_BKTR_DEVICE

Deprecated since 2024-02-02.

Signed-off-by: James Almer <jamrial@gmail.com>

configure

@@ -2286,11 +2286,6 @@ HEADERS_LIST="
     cdio_paranoia_paranoia_h
     cuda_h
     dispatch_dispatch_h
-    dev_bktr_ioctl_bt848_h
-    dev_bktr_ioctl_meteor_h
-    dev_ic_bt8xx_h
-    dev_video_bktr_ioctl_bt848_h
-    dev_video_meteor_ioctl_meteor_h
     direct_h
     dirent_h
     dxgidebug_h
@@ -2300,8 +2295,6 @@ HEADERS_LIST="
     io_h
     linux_dma_buf_h
     linux_perf_event_h
-    machine_ioctl_bt848_h
-    machine_ioctl_meteor_h
     malloc_h
     opencv2_core_core_c_h
     OpenGL_gl3_h
@@ -3749,7 +3742,6 @@ avfoundation_indev_suggest="coregraphics applicationservices"
 avfoundation_indev_extralibs="-framework Foundation"
 audiotoolbox_outdev_deps="audiotoolbox pthreads"
 audiotoolbox_outdev_extralibs="-framework AudioToolbox -framework CoreAudio"
-bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
 caca_outdev_deps="libcaca"
 decklink_deps_any="libdl LoadLibrary"
 decklink_indev_deps="decklink threads"
@@ -7261,12 +7253,6 @@ check_cpp_condition vfwcap_defines vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER"
 
 check_type "dshow.h" IBaseFilter
 
-# check for ioctl_meteor.h, ioctl_bt848.h and alternatives
-check_headers "dev/bktr/ioctl_meteor.h dev/bktr/ioctl_bt848.h"                   ||
-    check_headers "machine/ioctl_meteor.h machine/ioctl_bt848.h"                 ||
-    check_headers "dev/video/meteor/ioctl_meteor.h dev/video/bktr/ioctl_bt848.h" ||
-    check_headers "dev/ic/bt8xx.h"
-
 if check_struct sys/soundcard.h audio_buf_info bytes; then
     enable_sanitized sys/soundcard.h
 else