regulator: qcom_rpm: remove defined but not used 'pm8921_ftsmps'

Fix the following gcc warning:

drivers/regulator/qcom_rpm-regulator.c:607:34: warning: ‘pm8921_ftsmps’
defined but not used [-Wunused-const-variable=]
static const struct qcom_rpm_reg pm8921_ftsmps = {
^~~~~~~~~~~~~

Reported-by: Hulk Robot <[e-mail]>
Signed-off-by: Jason Yan <[e-mail]>
Reviewed-by: Bjorn Andersson <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Mark Brown <[e-mail]>

drivers/regulator/qcom_rpm-regulator.c

···
 	.supports_force_mode_bypass = false,
 };
 
-static const struct qcom_rpm_reg pm8921_ftsmps = {
-	.desc.linear_ranges = ftsmps_ranges,
-	.desc.n_linear_ranges = ARRAY_SIZE(ftsmps_ranges),
-	.desc.n_voltages = 101,
-	.desc.ops = &uV_ops,
-	.parts = &rpm8960_smps_parts,
-	.supports_force_mode_auto = true,
-	.supports_force_mode_bypass = false,
-};
-
 static const struct qcom_rpm_reg pm8921_ncp = {
 	.desc.linear_ranges = ncp_ranges,
 	.desc.n_linear_ranges = ARRAY_SIZE(ncp_ranges),