regulator: qcom_smd: Remove list_voltage callback for rpm_smps_ldo_ops_fixed

Use regulator_list_voltage_linear_range in rpm_smps_ldo_ops_fixed is
wrong because it is used for fixed regulator without any linear range.
The rpm_smps_ldo_ops_fixed is used for pm8941_lnldo which has fixed_uV
set and n_voltages = 1. In this case, regulator_list_voltage() can return
rdev->desc->fixed_uV without .list_voltage implementation.

Fixes: 3bfbb4d1 ("regulator: qcom_smd: add list_voltage callback")
Signed-off-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

drivers/regulator/qcom_smd-regulator.c

@@ -152,7 +152,6 @@ static const struct regulator_ops rpm_smps_ldo_ops_fixed = {
 	.enable = rpm_reg_enable,
 	.disable = rpm_reg_disable,
 	.is_enabled = rpm_reg_is_enabled,
-	.list_voltage = regulator_list_voltage_linear_range,
 
 	.get_voltage = rpm_reg_get_voltage,
 	.set_voltage = rpm_reg_set_voltage,