The multi-value repository was removed from the list of repositories we
pull in update-wasm-spec-tests.sh. But the tarball still contains some
multi-value tests which should be removed.

R=ahaas@chromium.org

Change-Id: Ifb96a105c95d09f202a0f23ba50cddaa7ced494b
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2161074Reviewed-by: Andreas Haas <ahaas@chromium.org>
Commit-Queue: Thibaud Michaud <thibaudm@chromium.org>
Cr-Commit-Position: refs/heads/master@{#67323}