diff --git a/src/arch/x86/timestamp.inc b/src/arch/x86/timestamp.inc
deleted file mode 100644
index 032a011dbb..0000000000
--- a/src/arch/x86/timestamp.inc
+++ /dev/null
@@ -1,23 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0-only */
-
-/*
- * Store the initial timestamp for booting in mmx registers. This works
- * because the bootblock isn't being compiled with MMX support so mm1 and
- * mm2 will be preserved into romstage.
- */
-	.code32
-
-.global stash_timestamp
-stash_timestamp:
-
-	/* Save the BIST value */
-	movl	%eax, %ebx
-
-	finit
-	rdtsc
-	movd	%ebx, %mm0
-	movd	%eax, %mm1
-	movd	%edx, %mm2
-
-	/* Restore the BIST value to %eax */
-	movl	%ebx, %eax