drivers: pwm: stm32: kconfig: remove ll_tim selection

Usage of stm32xxxx_ll_tim.c has been removed so we can also remove the
selection of USE_STM32_LL_TIM from the Kconfig.
Also remove the LL_RCC that plays no part in the driver.

Signed-off-by: Guillaume Gautier <[email protected]>

Author: gautierg-st

drivers/pwm/Kconfig.stm32

@@ -7,8 +7,6 @@ config PWM_STM32
 	bool "STM32 MCU PWM driver"
 	default y
 	depends on DT_HAS_ST_STM32_PWM_ENABLED
-	select USE_STM32_LL_TIM
-	select USE_STM32_LL_RCC if SOC_SERIES_STM32F4X || SOC_SERIES_STM32F7X || SOC_SERIES_STM32H7X
 	select RESET
 	select PINCTRL
 	help