[wasm] Remove leftover src/wasm/wasm-memory.cc file

Change-Id: Ied0ee7f9c343dc802dec53c3d717a0ca359b504b
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2050398Reviewed-by: Deepti Gandluri <gdeepti@chromium.org>
Reviewed-by: Clemens Backes <clemensb@chromium.org>
Commit-Queue: Georgia Kouveli <georgia.kouveli@arm.com>
Cr-Commit-Position: refs/heads/master@{#66269}