tree: Drop unused <timer.h>

Change-Id: Ib454330c5f584760c47ff0127a720cec5773b922
Signed-off-by: Elyes Haouas <ehaouas@noos.fr>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/81822
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-by: Jakub Czapiga <czapiga@google.com>

src/mainboard/sifive/hifive-unmatched/cbfs_spi.c

@@ -16,7 +16,6 @@
 #include <spi_sdcard.h>
 #include <stdint.h>
 #include <symbols.h>
-#include <timer.h>
 
 // There are two different means of accessing the SPI flash.
 // They are controlled by the fctrl register.

src/soc/intel/meteorlake/finalize.c

@@ -22,7 +22,6 @@
 #include <soc/smbus.h>
 #include <soc/soc_chip.h>
 #include <soc/systemagent.h>
-#include <timer.h>
 
 static void pch_handle_sideband(config_t *config)
 {