Replace by explicitly deleting the copy constructor and copy assignment
operator.

R=zhin@chromium.org

Bug: v8:11074
Change-Id: Ifbfaad91d555649f586f37c251c6f4c378dcba46
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2523317Reviewed-by: Zhi An Ng <zhin@chromium.org>
Commit-Queue: Clemens Backes <clemensb@chromium.org>
Cr-Commit-Position: refs/heads/master@{#71118}