spi: bcm63xx-spi: don't check 'delay_usecs' field

The 'delay_usecs' field was handled for backwards compatibility in case
there were some users that still configured SPI delay transfers with
this field.

They should all be removed by now.
Signed-off-by: Alexandru Ardelean <aardelean@deviqon.com>
Link: https://lore.kernel.org/r/20210308145502.1075689-3-aardelean@deviqon.comSigned-off-by: Mark Brown <broonie@kernel.org>

drivers/spi/spi-bcm63xx.c

@@ -369,7 +369,7 @@ static int bcm63xx_spi_transfer_one(struct spi_master *master,
 		}
 
 		/* CS will be deasserted directly after transfer */
-		if (t->delay_usecs || t->delay.value) {
+		if (t->delay.value) {
 			dev_err(&spi->dev, "unable to keep CS asserted after transfer\n");
 			status = -EINVAL;
 			goto exit;