regulator: max77802: Remove .set_ramp_delay from max77802_buck_dvs_ops

max77802_set_ramp_delay_2bit() returns -EINVAL when id > MAX77802_BUCK4.
This was a leftover in commit b0615f1
("regulator: max77802: Split regulator operations for BUCKs").

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Link: https://lore.kernel.org/r/20210523072320.2174443-1-axel.lin@ingics.com
Signed-off-by: Mark Brown <broonie@kernel.org>

drivers/regulator/max77802-regulator.c

@@ -345,7 +345,6 @@ static const struct regulator_ops max77802_buck_dvs_ops = {
 	.get_voltage_sel	= regulator_get_voltage_sel_regmap,
 	.set_voltage_sel	= regulator_set_voltage_sel_regmap,
 	.set_voltage_time_sel	= regulator_set_voltage_time_sel,
-	.set_ramp_delay		= max77802_set_ramp_delay_2bit,
 	.set_suspend_disable	= max77802_set_suspend_disable,
 };