switch to using fayalite version of checked_vcd_output instead of cpu::util

crates/cpu/tests/rename_execute_retire.rs

@@ -2,7 +2,6 @@
 // See Notices.txt for copyright information
 
 use cpu::{
-    checked_vcd_output,
     config::{
         CpuConfig, CpuConfigFetchWidth, CpuConfigMaxUnitMaxInFlight, PhantomConstCpuConfig,
         UnitConfig,
@@ -29,6 +28,7 @@ use cpu::{
 };
 use fayalite::{
     bundle::BundleType,
+    checked_vcd_output,
     module::instance_with_loc,
     prelude::*,
     ty::{OpaqueSimValue, StaticType},