virtio-serial-bus.c: drop virtio_ids.h

virtio-serial.h pulls that in already.
Reported-by: NThomas Huth <thuth@linux.vnet.ibm.com>
Signed-off-by: NMichael S. Tsirkin <mst@redhat.com>

hw/char/virtio-serial-bus.c

@@ -18,7 +18,6 @@
  * GNU GPL, version 2 or (at your option) any later version.
  */
 
-#include "standard-headers/linux/virtio_ids.h"
 #include "qemu/iov.h"
 #include "monitor/monitor.h"
 #include "qemu/queue.h"