Remove for:
 * Word32T
 * String
 * SharedFunctionInfo
 * MaybeObject

Bug: v8:6949, v8:11074
Change-Id: I6facf1692697a4776a88ceae8a817f57af40c351
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2523322Reviewed-by: Ross McIlroy <rmcilroy@chromium.org>
Commit-Queue: Santiago Aboy Solanes <solanes@chromium.org>
Cr-Commit-Position: refs/heads/master@{#71051}