dm: blk: Drop blk_{read,write}_devnum()

blk_{read,write}_devnum() are no longer used by anywhere in the
source tree. Drop them.

Signed-off-by: Bin Meng <bmeng@tinylab.org>
Reviewed-by: Simon Glass <sjg@chromium.org>
diff --git a/drivers/block/blk-uclass.c b/drivers/block/blk-uclass.c
index c9f7d46..f126547 100644
--- a/drivers/block/blk-uclass.c
+++ b/drivers/block/blk-uclass.c
@@ -317,35 +317,6 @@
 	return 0;
 }
 
-ulong blk_read_devnum(enum uclass_id uclass_id, int devnum, lbaint_t start,
-		      lbaint_t blkcnt, void *buffer)
-{
-	struct blk_desc *desc;
-	ulong n;
-	int ret;
-
-	ret = blk_get_desc(uclass_id, devnum, &desc);
-	if (ret)
-		return ret;
-	n = blk_dread(desc, start, blkcnt, buffer);
-	if (IS_ERR_VALUE(n))
-		return n;
-
-	return n;
-}
-
-ulong blk_write_devnum(enum uclass_id uclass_id, int devnum, lbaint_t start,
-		       lbaint_t blkcnt, const void *buffer)
-{
-	struct blk_desc *desc;
-	int ret;
-
-	ret = blk_get_desc(uclass_id, devnum, &desc);
-	if (ret)
-		return ret;
-	return blk_dwrite(desc, start, blkcnt, buffer);
-}
-
 int blk_select_hwpart(struct udevice *dev, int hwpart)
 {
 	const struct blk_ops *ops = blk_get_ops(dev);
diff --git a/include/blk.h b/include/blk.h
index b453b5a..76bd5ba 100644
--- a/include/blk.h
+++ b/include/blk.h
@@ -730,32 +730,6 @@
 int blk_print_part_devnum(enum uclass_id uclass_id, int devnum);
 
 /**
- * blk_read_devnum() - read blocks from a device
- *
- * @uclass_id:	Block device type
- * @devnum:	Device number
- * @start:	Start block number to read (0=first)
- * @blkcnt:	Number of blocks to read
- * @buffer:	Address to write data to
- * Return: number of blocks read, or -ve error number on error
- */
-ulong blk_read_devnum(enum uclass_id uclass_id, int devnum, lbaint_t start,
-		      lbaint_t blkcnt, void *buffer);
-
-/**
- * blk_write_devnum() - write blocks to a device
- *
- * @uclass_id:	Block device type
- * @devnum:	Device number
- * @start:	Start block number to write (0=first)
- * @blkcnt:	Number of blocks to write
- * @buffer:	Address to read data from
- * Return: number of blocks written, or -ve error number on error
- */
-ulong blk_write_devnum(enum uclass_id uclass_id, int devnum, lbaint_t start,
-		       lbaint_t blkcnt, const void *buffer);
-
-/**
  * blk_select_hwpart_devnum() - select a hardware partition
  *
  * This is similar to blk_dselect_hwpart() but it looks up the interface and