src: Remove unused 'include <bootstate.h>'

Change-Id: I54eda3d51ecda77309841e598f06eb9cea3babc1
Signed-off-by: Elyes HAOUAS <ehaouas@noos.fr>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/41671
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>

src/ec/google/chromeec/ec.c

@@ -3,7 +3,6 @@
 #include <stdint.h>
 #include <string.h>
 #include <assert.h>
-#include <bootstate.h>
 #include <cbmem.h>
 #include <console/console.h>
 #include <delay.h>