regulator: ab8500: remove some defined but not used variables

Fix the following gcc warning:

drivers/regulator/ab8500.c:195:27: warning: ‘ldo_vdmic_voltages’ defined
but not used [-Wunused-const-variable=]
static const unsigned int ldo_vdmic_voltages[] = {
^~~~~~~~~~~~~~~~~~
drivers/regulator/ab8500.c:169:27: warning: ‘fixed_3300000_voltage’
defined but not used [-Wunused-const-variable=]
static const unsigned int fixed_3300000_voltage[] = {
^~~~~~~~~~~~~~~~~~~~~
drivers/regulator/ab8500.c:142:27: warning: ‘ldo_sdio_voltages’ defined
but not used [-Wunused-const-variable=]
static const unsigned int ldo_sdio_voltages[] = {
^~~~~~~~~~~~~~~~~

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

drivers/regulator/ab8500.c

···
 	1350000,
 };
 
-static const unsigned int ldo_sdio_voltages[] = {
-	1160000,
-	1050000,
-	1100000,
-	1500000,
-	1800000,
-	2200000,
-	2910000,
-	3050000,
-};
-
 static const unsigned int fixed_1200000_voltage[] = {
 	1200000,
 };
···
 
 static const unsigned int fixed_2050000_voltage[] = {
 	2050000,
-};
-
-static const unsigned int fixed_3300000_voltage[] = {
-	3300000,
 };
 
 static const unsigned int ldo_vana_voltages[] = {
···
 	2500000,
 	2600000,
 	2600000,	/* Duplicated in Vaudio and IsoUicc Control register. */
-};
-
-static const unsigned int ldo_vdmic_voltages[] = {
-	1800000,
-	1900000,
-	2000000,
-	2850000,
 };
 
 static DEFINE_MUTEX(shared_mode_mutex);