soc/intel/broadwell: Drop unused function declarations

These functions are never defined. Remove the unused declarations.

Change-Id: I4204265680d06bf83fc42f061fd7270ff8e3305e
Signed-off-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/55798
Reviewed-by: Felix Held <felix-coreboot@felixheld.de>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

src/soc/intel/broadwell/include/soc/romstage.h

@@ -18,7 +18,5 @@ void report_platform_info(void);
 
 void systemagent_early_init(void);
 void pch_early_init(void);
-void pch_uart_init(void);
-void intel_early_me_status(void);
 
 #endif