qdev: qdev_create(), qdev_try_create() are now unused, drop

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Message-Id: <20200610053247.1583243-31-armbru@redhat.com>
diff --git a/migration/migration.c b/migration/migration.c
index b63ad91..481a590 100644
--- a/migration/migration.c
+++ b/migration/migration.c
@@ -3778,7 +3778,7 @@
     .name = TYPE_MIGRATION,
     /*
      * NOTE: TYPE_MIGRATION is not really a device, as the object is
-     * not created using qdev_create(), it is not attached to the qdev
+     * not created using qdev_new(), it is not attached to the qdev
      * device tree, and it is never realized.
      *
      * TODO: Make this TYPE_OBJECT once QOM provides something like