[MTD] Remove read/write _ecc variants

MTD clients are agnostic of FLASH which needs ECC suppport.
Remove the functions and fixup the callers.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

drivers/mtd/devices/doc2001.c

@@ -369,8 +369,6 @@ void DoCMil_init(struct mtd_info *mtd)
 	mtd->unpoint = NULL;
 	mtd->read = doc_read;
 	mtd->write = doc_write;
-	mtd->read_ecc = doc_read_ecc;
-	mtd->write_ecc = doc_write_ecc;
 	mtd->read_oob = doc_read_oob;
 	mtd->write_oob = doc_write_oob;
 	mtd->sync = NULL;