block: Remove deprecated -drive option serial

This reinstates commit b008326744,
which was temporarily reverted for the 3.0 release so that libvirt gets
some extra time to update their command lines.

The -drive option serial was deprecated in QEMU 2.10. It's time to
remove it.

Tests need to be updated to set the serial number with -global instead
of using the -drive option.

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Jeff Cody <jcody@redhat.com>

hw/block/block.c

@@ -15,19 +15,6 @@
 #include "qapi/qapi-types-block.h"
 #include "qemu/error-report.h"
 
-void blkconf_serial(BlockConf *conf, char **serial)
-{
-    DriveInfo *dinfo;
-
-    if (!*serial) {
-        /* try to fall back to value set with legacy -drive serial=... */
-        dinfo = blk_legacy_dinfo(conf->blk);
-        if (dinfo) {
-            *serial = g_strdup(dinfo->serial);
-        }
-    }
-}
-
 void blkconf_blocksizes(BlockConf *conf)
 {
     BlockBackend *blk = conf->blk;

hw/block/nvme.c

@@ -1217,7 +1217,6 @@ static void nvme_realize(PCIDevice *pci_dev, Error **errp)
         return;
     }
 
-    blkconf_serial(&n->conf, &n->serial);
     if (!n->serial) {
         error_setg(errp, "serial property not set");
         return;

hw/block/virtio-blk.c

@@ -935,7 +935,6 @@ static void virtio_blk_device_realize(DeviceState *dev, Error **errp)
         return;
     }
 
-    blkconf_serial(&conf->conf, &conf->serial);
     if (!blkconf_apply_backend_options(&conf->conf,
                                        blk_is_read_only(conf->conf.blk), true,
                                        errp)) {