src: Remove unused <bootmode.h>

Found using:
diff <(git grep -l '#include <bootmode.h>' -- src/) <(git grep -l 'platform_is_resuming\|gfx_set_init_done\|gfx_get_init_done\|display_init_required\|get_ec_is_trusted\|get_lid_switch\|get_wipeout_mode_switch\|clear_recovery_mode_switch\|get_recovery_mode_retrain_switch\|get_recovery_mode_switch\|get_recovery_mode_retrain_switch\|get_recovery_mode_switch\|get_write_protect_state\|init_bootmode_straps' -- src/) |grep "<"

Change-Id: I2ebd472e0cfc641bd7e465b8d29272fd2f7520a1
Signed-off-by: Elyes HAOUAS <ehaouas@noos.fr>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/60911
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Hung-Te Lin <hungte@chromium.org>

src/drivers/intel/fsp2_0/memory_init.c

@@ -3,7 +3,6 @@
 #include <security/vboot/antirollback.h>
 #include <arch/symbols.h>
 #include <assert.h>
-#include <bootmode.h>
 #include <cbfs.h>
 #include <cbmem.h>
 #include <cf9_reset.h>

src/soc/mediatek/common/memory.c

@@ -1,7 +1,6 @@
 /* SPDX-License-Identifier: GPL-2.0-only */
 
 #include <assert.h>
-#include <bootmode.h>
 #include <cbfs.h>
 #include <cbmem.h>
 #include <commonlib/bsd/mem_chip_info.h>

src/soc/qualcomm/common/qclib.c

@@ -2,7 +2,6 @@
 
 #include <console/cbmem_console.h>
 #include <cbmem.h>
-#include <bootmode.h>
 #include <string.h>
 #include <fmap.h>
 #include <assert.h>