mtd: nand: denali: remove ad-hoc board_nand_init() entry

This driver is highly dependent on the configuration from denali_dt.c
Please enable CONFIG_NAND_DENALI_DT if you use this driver.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>

drivers/mtd/nand/denali.c

@@ -1366,29 +1366,3 @@ free_buf:
 
 	return ret;
 }
-
-#ifndef CONFIG_NAND_DENALI_DT
-static int __board_nand_init(void)
-{
-	struct denali_nand_info *denali;
-
-	denali = kzalloc(sizeof(*denali), GFP_KERNEL);
-	if (!denali)
-		return -ENOMEM;
-
-	/*
-	 * In the future, these base addresses should be taken from
-	 * Device Tree or platform data.
-	 */
-	denali->reg = (void  __iomem *)CONFIG_SYS_NAND_REGS_BASE;
-	denali->host = (void  __iomem *)CONFIG_SYS_NAND_DATA_BASE;
-
-	return denali_init(denali);
-}
-
-void board_nand_init(void)
-{
-	if (__board_nand_init() < 0)
-		pr_warn("Failed to initialize Denali NAND controller.\n");
-}
-#endif