The TF_BUILTIN version of UntypedParameter is not used anywhere. There's
still CodeAssembler::UntypedParameter which is still in use if a untyped
parameter is required.

Change-Id: I3580e73b781d750878d7bb1b38298d5b82d15f4c
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2445876
Commit-Queue: Dan Elphick <delphick@chromium.org>
Commit-Queue: Santiago Aboy Solanes <solanes@chromium.org>
Auto-Submit: Dan Elphick <delphick@chromium.org>
Reviewed-by: Santiago Aboy Solanes <solanes@chromium.org>
Cr-Commit-Position: refs/heads/master@{#70289}