mtd: spinand: Remove write_enable_op() in markbad()

mtd: spinand: Remove write_enable_op() in markbad()

We don't have to call spinand_write_enable_op() in spinand_markbad() as
it is called in spinand_write_page().

This is the port of linux commit
c6858779f1f5 (mtd: spinand: Remove write_enable_op() in markbad())

Signed-off-by: Takahiro Kuwano <Takahiro.Kuwano@infineon.com>
Reviewed-by: Tudor Ambarus <tudor.ambarus@linaro.org>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Signed-off-by: Mikhail Kshevetskiy <mikhail.kshevetskiy@iopsys.eu> # U-Boot port
Reviewed-by: Frieder Schrempf <frieder.schrempf@kontron.de>
Signed-off-by: Michael Trimarchi <michael@amarulasolutions.com>