mb/google/fatcat: Remove unnecessary prototype

BUG=b:377798581
TEST=fatcat board build is successful

Change-Id: I5d71e9edde0ecbd7aaf316cd754a6ebcff9da77a
Signed-off-by: Jeremy Compostella <jeremy.compostella@intel.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/85442
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Subrata Banik <subratabanik@google.com>
Reviewed-by: Elyes Haouas <ehaouas@noos.fr>
Reviewed-by: Pranava Y N <pranavayn@google.com>
diff --git a/src/mainboard/google/fatcat/variants/baseboard/include/baseboard/variants.h b/src/mainboard/google/fatcat/variants/baseboard/include/baseboard/variants.h
index 581ba51..2a70408 100644
--- a/src/mainboard/google/fatcat/variants/baseboard/include/baseboard/variants.h
+++ b/src/mainboard/google/fatcat/variants/baseboard/include/baseboard/variants.h
@@ -25,9 +25,6 @@
 bool variant_is_half_populated(void);
 void variant_update_soc_chip_config(struct soc_intel_pantherlake_config *config);
 
-/* Get soc power limit config struct for current CPU sku */
-struct soc_power_limits_config *variant_get_soc_power_limit_config(void);
-
 enum s0ix_entry {
 	S0IX_EXIT,
 	S0IX_ENTRY,