block/iscsi: remove .bdrv_has_zero_init

since commit 3ac21627 the default value changed to 0.
Signed-off-by: NPeter Lieven <pl@kamp.de>
Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com>
Signed-off-by: NStefan Hajnoczi <stefanha@redhat.com>

block/iscsi.c

@@ -1505,11 +1505,6 @@ static int iscsi_truncate(BlockDriverState *bs, int64_t offset)
     return 0;
 }
 
-static int iscsi_has_zero_init(BlockDriverState *bs)
-{
-    return 0;
-}
-
 static int iscsi_create(const char *filename, QEMUOptionParameter *options,
                         Error **errp)
 {
@@ -1608,8 +1603,6 @@ static BlockDriver bdrv_iscsi = {
     .bdrv_aio_writev = iscsi_aio_writev,
     .bdrv_aio_flush  = iscsi_aio_flush,
 
-    .bdrv_has_zero_init = iscsi_has_zero_init,
-
 #ifdef __linux__
     .bdrv_ioctl       = iscsi_ioctl,
     .bdrv_aio_ioctl   = iscsi_aio_ioctl,