pflash_cfi01: Remove user_creatable flag

TYPE_CFI_PFLASH01 devices need to be mapped by
pflash_cfi01_register() (or equivalent) and can't be used with
-device. Remove user_creatable from the device class.

Cc: Kevin Wolf <kwolf@redhat.com>
Cc: Max Reitz <mreitz@redhat.com>
Cc: qemu-block@nongnu.org
Cc: Laszlo Ersek <lersek@redhat.com>
Cc: Philippe Mathieu-Daudé <f4bug@amsat.org>
Cc: Marcel Apfelbaum <marcel@redhat.com>
Reviewed-by: NPhilippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: NLaszlo Ersek <lersek@redhat.com>
Acked-by: NMarcel Apfelbaum <marcel@redhat.com>
Signed-off-by: NEduardo Habkost <ehabkost@redhat.com>
Message-Id: <20170503203604.31462-7-ehabkost@redhat.com>
Signed-off-by: NEduardo Habkost <ehabkost@redhat.com>

hw/block/pflash_cfi01.c

@@ -927,11 +927,6 @@ static void pflash_cfi01_class_init(ObjectClass *klass, void *data)
     dc->props = pflash_cfi01_properties;
     dc->vmsd = &vmstate_pflash;
     set_bit(DEVICE_CATEGORY_STORAGE, dc->categories);
-    /*
-     * FIXME: Set only because we are not sure yet if this device
-     * will be outside the q35 sysbus whitelist.
-     */
-    dc->user_creatable = true;
 }