mtd: nand: denali: remove bogus comment about interrupt handler setup

The interrupt handler is setup in denali_init(), not in
denali_drv_init(). This comment is false.

Such a comment adds no value, so just delete it instead of move.

Signed-off-by: Masahiro Yamada <[e-mail]>
Reviewed-by: Marek Vasut <[e-mail]>
Signed-off-by: Boris Brezillon <[e-mail]>

drivers/mtd/nand/denali.c

···
 /* initialize driver data structures */
 static void denali_drv_init(struct denali_nand_info *denali)
 {
-	/* setup interrupt handler */
 	/*
 	 * the completion object will be used to notify
 	 * the callee that the interrupt is done