broadwell: Remove unused bootblock code

This code that stores the initial timestamp is not being used,
instead the timestamp is passed to romstage_main().

BUG=chrome-os-partner:28234
BRANCH=samus,auron
TEST=build and boot on samus

Original-Change-Id: I0e0fa1ba74ab93d4454fdfa12208e712d2ae913c
Original-Signed-off-by: Duncan Laurie <dlaurie@chromium.org>
Original-Reviewed-on: https://chromium-review.googlesource.com/234402
Original-Reviewed-by: Shawn Nematbakhsh <shawnn@chromium.org>
(cherry picked from commit 838112cf79)
Signed-off-by: Marc Jones <marc.jones@se-eng.com>

Change-Id: I8fd7ba72c14c1e39f7bfa3a1ae8d03289a2abf73
Reviewed-on: http://review.coreboot.org/9698
Tested-by: build bot (Jenkins)
Reviewed-by: Aaron Durbin <adurbin@chromium.org>

src/soc/intel/broadwell/bootblock/pch.c

@@ -18,24 +18,12 @@
  */
 
 #include <arch/io.h>
-#include <cpu/x86/tsc.h>
 #include <soc/iomap.h>
 #include <soc/lpc.h>
 #include <soc/pci_devs.h>
 #include <soc/rcba.h>
 #include <soc/spi.h>
 
-static void store_initial_timestamp(void)
-{
-	/* Two 32bit scratchpad registers available:
-	 * D0:F0  0xdc (SKPAD)
-	 * D31:F2 0xd0 (SATA SP)
-	 */
-	tsc_t tsc = rdtsc();
-	pci_write_config32(SA_DEV_ROOT, 0xdc, tsc.lo);
-	pci_write_config32(PCH_DEV_SATA, 0xd0, tsc.hi);
-}
-
 /*
  * Enable Prefetching and Caching.
  */
@@ -84,9 +72,6 @@ static void set_spi_speed(void)
 
 static void bootblock_southbridge_init(void)
 {
-#if CONFIG_COLLECT_TIMESTAMPS
-	store_initial_timestamp();
-#endif
 	map_rcba();
 	enable_spi_prefetch();
 	enable_port80_on_lpc();