mtd: spi-nor: Drop duplicated new line

Two new lines, one after another, drop one.
Signed-off-by: NTudor Ambarus <tudor.ambarus@microchip.com>
Reviewed-by: NBoris Brezillon <boris.brezillon@collabora.com>

drivers/mtd/spi-nor/spi-nor.c

@@ -541,7 +541,6 @@ static struct spi_nor *mtd_to_spi_nor(struct mtd_info *mtd)
 	return mtd->priv;
 }
 
-
 static u8 spi_nor_convert_opcode(u8 opcode, const u8 table[][2], size_t size)
 {
 	size_t i;