lavd: drop disabled v4l code

This code is disabled since 2012. V4L1 was dropped from the kernel more
than 10 years ago.

configure

@@ -3048,7 +3048,6 @@ qtkit_indev_select="qtkit"
 sdl2_outdev_deps="sdl2"
 sndio_indev_deps="sndio"
 sndio_outdev_deps="sndio"
-v4l_indev_deps="linux_videodev_h"
 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
 vfwcap_indev_deps="vfw32 vfwcap_defines"
@@ -6079,7 +6078,6 @@ pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
 
 check_header linux/fb.h
-check_header linux/videodev.h
 check_header linux/videodev2.h
 check_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
 

libavdevice/Makefile

@@ -47,7 +47,6 @@ OBJS-$(CONFIG_SNDIO_INDEV)               += sndio_dec.o sndio.o
 OBJS-$(CONFIG_SNDIO_OUTDEV)              += sndio_enc.o sndio.o
 OBJS-$(CONFIG_V4L2_INDEV)                += v4l2.o v4l2-common.o timefilter.o
 OBJS-$(CONFIG_V4L2_OUTDEV)               += v4l2enc.o v4l2-common.o
-OBJS-$(CONFIG_V4L_INDEV)                 += v4l.o
 OBJS-$(CONFIG_VFWCAP_INDEV)              += vfwcap.o
 OBJS-$(CONFIG_XCBGRAB_INDEV)             += xcbgrab.o
 OBJS-$(CONFIG_XV_OUTDEV)                 += xv.o

libavdevice/alldevices.c

@@ -62,7 +62,6 @@ static void register_all(void)
     REGISTER_OUTDEV  (SDL2,             sdl2);
     REGISTER_INOUTDEV(SNDIO,            sndio);
     REGISTER_INOUTDEV(V4L2,             v4l2);
-//    REGISTER_INDEV   (V4L,              v4l
     REGISTER_INDEV   (VFWCAP,           vfwcap);
     REGISTER_INDEV   (XCBGRAB,          xcbgrab);
     REGISTER_OUTDEV  (XV,               xv);