soc/intel: Drop pmc_get_mainboard_power_failure_state_choice()

It's not needed anymore.

Change-Id: I273acb2bf1675dc947927e3e6d2ebb78aa94518a
Signed-off-by: Nico Huber <nico.h@gmx.de>
Reviewed-on: https://review.coreboot.org/c/29681
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: HAOUAS Elyes <ehaouas@noos.fr>

src/soc/intel/common/block/include/intelblocks/pmclib.h

@@ -221,10 +221,4 @@ enum {
 	MAINBOARD_POWER_STATE_PREVIOUS,
 };
 
-/*
- * Determines what state to go to when power is reapplied
- * after a power failure (G3 State)
- */
-int pmc_get_mainboard_power_failure_state_choice(void);
-
 #endif /* SOC_INTEL_COMMON_BLOCK_PMCLIB_H */

src/soc/intel/common/block/pmc/pmclib.c

@@ -580,12 +580,3 @@ void pmc_gpe_init(void)
 	/* Set the routes in the GPIO communities as well. */
 	gpio_route_gpe(dw0, dw1, dw2);
 }
-
-/*
- * Determines what state to go to when power is reapplied
- * after a power failure (G3 State)
- */
-int pmc_get_mainboard_power_failure_state_choice(void)
-{
-	return CONFIG_MAINBOARD_POWER_FAILURE_STATE;
-}