mtd: nand: remove EXPORT_SYMBOL of nand_scan_bbt()

Since commit 17799359e7b3fa6ef4f2bf926cd6821cf7903ecf ("mtd: nand_bbt:
make nand_scan_bbt() static"), the nand_scan_bbt() function is marked
as static but is still exported using EXPORT_SYMBOL(), which doesn't
make much sense.

This commit gets rid of the useless EXPORT_SYMBOL.

Signed-off-by: Thomas Petazzoni <[e-mail]>
Reviewed-by: Boris Brezillon <[e-mail]>
Signed-off-by: Brian Norris <[e-mail]>

drivers/mtd/nand/nand_bbt.c

···
 
 	return ret;
 }
-
-EXPORT_SYMBOL(nand_scan_bbt);