blk: Drop blk_prepare_device()

With the post_probe() changes, this API is no longer needed.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
diff --git a/drivers/block/blk-uclass.c b/drivers/block/blk-uclass.c
index 95e7b54..3f00ff8 100644
--- a/drivers/block/blk-uclass.c
+++ b/drivers/block/blk-uclass.c
@@ -471,15 +471,6 @@
 	return ops->erase(dev, start, blkcnt);
 }
 
-int blk_prepare_device(struct udevice *dev)
-{
-	struct blk_desc *desc = dev_get_uclass_platdata(dev);
-
-	part_init(desc);
-
-	return 0;
-}
-
 int blk_get_from_parent(struct udevice *parent, struct udevice **devp)
 {
 	struct udevice *dev;
diff --git a/include/blk.h b/include/blk.h
index 6af2196..c243179 100644
--- a/include/blk.h
+++ b/include/blk.h
@@ -357,16 +357,6 @@
 		       lbaint_t lba, struct udevice **devp);
 
 /**
- * blk_prepare_device() - Prepare a block device for use
- *
- * This reads partition information from the device if supported.
- *
- * @dev:	Device to prepare
- * @return 0 if ok, -ve on error
- */
-int blk_prepare_device(struct udevice *dev);
-
-/**
  * blk_unbind_all() - Unbind all device of the given interface type
  *
  * The devices are removed and then unbound.