mtd: rawnand: omap2: drop unused module alias

The driver only supports OF probing since commit 086c321 ("mtd:
nand: omap2: Remove omap_nand_platform_data") so drop the unused
platform module alias.

Signed-off-by: Johan Hovold <johan@kernel.org>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>

Author: jhovold

drivers/mtd/nand/raw/omap2.c

@@ -2316,6 +2316,5 @@ static struct platform_driver omap_nand_driver = {
 
 module_platform_driver(omap_nand_driver);
 
-MODULE_ALIAS("platform:" DRIVER_NAME);
 MODULE_LICENSE("GPL");
 MODULE_DESCRIPTION("Glue layer for NAND flash on TI OMAP boards");