v4l2: remove broken VBI in user pointer mode (refs #8262)

modules/access/v4l2/demux.c

@@ -537,15 +537,6 @@ static void *UserPtrThread (void *data)
     ufd[0].fd = fd;
     ufd[0].events = POLLIN;
 
-#ifdef ZVBI_COMPILED
-    if (sys->vbi != NULL)
-    {
-        ufd[1].fd = GetFdVBI (sys->vbi);
-        ufd[1].events = POLLIN;
-        numfds++;
-    }
-#endif
-
     int canc = vlc_savecancel ();
     for (;;)
     {
@@ -566,8 +557,6 @@ static void *UserPtrThread (void *data)
         vlc_cleanup_pop ();
         canc = vlc_savecancel ();
 
-        if( ufd[0].revents )
-        {
         if (v4l2_ioctl (fd, VIDIOC_DQBUF, &buf) < 0)
         {
             msg_Err (demux, "cannot dequeue buffer: %m");
@@ -582,11 +571,6 @@ static void *UserPtrThread (void *data)
         es_out_Control (demux->out, ES_OUT_SET_PCR, block->i_pts);
         es_out_Send (demux->out, sys->es, block);
     }
-#ifdef ZVBI_COMPILED
-        if (sys->vbi != NULL && ufd[1].revents)
-            GrabVBI (demux, sys->vbi);
-#endif
-    }
     vlc_restorecancel (canc); /* <- hmm, this is purely cosmetic */
     return NULL;
 }