icelake: remove unused processor power limits configuration

Remove unused processor power limit configuration parameter
and function call based on common code base support for
Intel Icelake SoC based platform.

BRANCH=None
BUG=None
TEST=Built for icelake based dragonegg board.

Change-Id: Id8923f2c176092b6f7acfbfb079587f88258dce8
Signed-off-by: Sumeet R Pawnikar <sumeet.r.pawnikar@intel.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/41236
Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

src/soc/intel/icelake/chip.h

@@ -171,8 +171,6 @@ struct soc_intel_icelake_config {
 	/* HeciEnabled decides the state of Heci1 at end of boot
 	 * Setting to 0 (default) disables Heci1 and hides the device from OS */
 	uint8_t HeciEnabled;
-	/* PL2 Override value in Watts */
-	uint32_t tdp_pl2_override;
 	/* Intel Speed Shift Technology */
 	uint8_t speed_shift_enable;
 	/* Enable VR specific mailbox command

src/soc/intel/icelake/include/soc/cpu.h

@@ -30,7 +30,4 @@
 	C_STATE_LATENCY_MICRO_SECONDS(C_STATE_LATENCY_CONTROL_ ##reg## _LIMIT, \
 				      (IRTL_1024_NS >> 10))
 
-/* Configure power limits for turbo mode */
-void set_power_limits(u8 power_limit_1_time);
-
 #endif