bootindex: delete bootindex when device is removed

Device should be removed from global boot list when
it is hot-unplugged.
Signed-off-by: NGonglei <arei.gonglei@huawei.com>
Reviewed-by: NGerd Hoffmann <kraxel@redhat.com>
Signed-off-by: NGerd Hoffmann <kraxel@redhat.com>

bootdevice.c

@@ -225,6 +225,8 @@ static void property_release_bootindex(Object *obj, const char *name,
 
 {
     BootIndexProperty *prop = opaque;
+
+    del_boot_device_path(prop->dev, prop->suffix);
     g_free(prop);
 }