A new SPI NAND subsystem has been added in drivers/mtd/nand/spi/ and
Micron's MT29F devices are now supported in
drivers/mtd/nand/spi/micron.c.

Remove the old driver.
Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>