thermal/drivers/st: Remove syscfg based driver

The syscfg based thermal driver is only supporting STiH415 STiH416 and
STiD127 platforms which are all no more supported.  We can thus safely
remove this driver since the remaining STi platform STiH407/STiH410
and STiH418 are all using the memmap based thermal driver.

Signed-off-by: Alain Volmat <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Daniel Lezcano <[email protected]>
Signed-off-by: Rafael J. Wysocki <[email protected]>

Author: Alain Volmat

drivers/thermal/st/Kconfig

@@ -8,10 +8,6 @@ config ST_THERMAL
 	help
 	  Support for thermal sensors on STMicroelectronics STi series of SoCs.
 
-config ST_THERMAL_SYSCFG
-	select ST_THERMAL
-	tristate "STi series syscfg register access based thermal sensors"
-
 config ST_THERMAL_MEMMAP
 	select ST_THERMAL
 	tristate "STi series memory mapped access based thermal sensors"

drivers/thermal/st/Makefile

@@ -1,5 +1,4 @@
 # SPDX-License-Identifier: GPL-2.0-only
 obj-$(CONFIG_ST_THERMAL)		:= st_thermal.o
-obj-$(CONFIG_ST_THERMAL_SYSCFG)		+= st_thermal_syscfg.o
 obj-$(CONFIG_ST_THERMAL_MEMMAP)		+= st_thermal_memmap.o
 obj-$(CONFIG_STM32_THERMAL)		+= stm_thermal.o