Revert "mtd: rawnand: bbt: Skip bad blocks when searching for the BBT in NAND"

This reverts commit bd9c9fe2.

Since commit bd9c9fe2 ("mtd: rawnand: bbt: Skip bad blocks when
searching for  the BBT in NAND") the bad block table cannot be found
on a imx27-phytec-phycard-s-rdk board:

Bad block table not found for chip 0
Bad block table not found for chip 0

Revert it for now, until a better solution can be found.

Signed-off-by: Fabio Estevam <festevam@gmail.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/20210419140350.809853-1-festevam@gmail.com