soc/intel: Drop SoC specific DPTF implementation

This patch drops the SoC specific implementation as DPTF driver can
now fillin those platform specific data using SoC specific macros.

Signed-off-by: Subrata Banik <subratabanik@google.com>
Change-Id: If65976f15374ba2410b537b1646ce466ba02969b
Reviewed-on: https://review.coreboot.org/c/coreboot/+/71112
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Kapil Porwal <kapilporwal@google.com>

src/drivers/intel/dptf/dptf.h

@@ -28,10 +28,4 @@ struct dptf_platform_info {
 	} tpch_method_names;
 };
 
-/*
- * `soc_get_dptf_platform_info()` is a callback into the SoC directory
- * to fill in the `struct dptf_platform_info` data structure.
- */
-const struct dptf_platform_info *soc_get_dptf_platform_info(void);
-
 #endif /* _DRIVERS_INTEL_DPTF_H_ */