arch/x86: Remove acpi_fail_wakeup() and cbmem_fail_resume()

Unused since commit d46b8d5.

Change-Id: If0f1e0381dd7698f842dc1288ff222a4d5d4783c
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/35389
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-by: Furquan Shaikh <furquan@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

src/include/cbmem.h

@@ -106,7 +106,6 @@ void *cbmem_find(u32 id);
 /* Indicate to each hook if cbmem is being recovered or not. */
 typedef void (* const cbmem_init_hook_t)(int is_recovery);
 void cbmem_run_init_hooks(int is_recovery);
-void cbmem_fail_resume(void);
 
 /* Ramstage only functions. */
 /* Add the cbmem memory used to the memory map at boot. */