cpu/x86/fpu_enable.inc: Remove file used by romcc

Change-Id: I530bb217bb9a944990232dcf4e08f160b5267512
Signed-off-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/55008
Reviewed-by: Paul Menzel <paulepanter@mailbox.org>
Reviewed-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

src/cpu/x86/fpu_enable.inc

@@ -1,22 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0-only */
-
-__fpu_start:
-	/* Preserve BIST. */
-	movl	%eax, %ebp
-
-	/*
-	 * Clear the CR0[2] bit (the "Emulation" flag, EM).
-	 *
-	 * This indicates that the processor has an (internal or external)
-	 * x87 FPU, i.e. floating point operations will be executed by the
-	 * hardware (and not emulated in software).
-	 *
-	 * Additionally, if this bit is not cleared, MMX/SSE instructions won't
-	 * work, i.e., they will trigger an invalid opcode exception (#UD).
-	 */
-	movl	%cr0, %eax
-	andl	$~(1 << 2), %eax
-	movl	%eax, %cr0
-
-	/* Restore BIST. */
-	movl	%ebp, %eax