scsi: Drop scsi_print_error()

This function is only defined by one driver and is empty. Move it into
the SCSI implementation itself. We could remove it, but it should be
useful for debugging.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
diff --git a/common/scsi.c b/common/scsi.c
index 4896fb9..6175e50 100644
--- a/common/scsi.c
+++ b/common/scsi.c
@@ -48,6 +48,11 @@
 #define SCSI_MAX_READ_BLK 0xFFFF
 #define SCSI_LBA48_READ	0xFFFFFFF
 
+static void scsi_print_error(ccb *pccb)
+{
+	/* Dummy function that could print an error for debugging */
+}
+
 #ifdef CONFIG_SYS_64BIT_LBA
 void scsi_setup_read16(ccb *pccb, lbaint_t start, unsigned long blocks)
 {