Fetch googletest for Node.js

The files that Node.js checks in source control are not enough
for BUILD.gn.

Change-Id: I84f4794b9354bf8a4006965cc84d8610ea3a1a7e
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2991647Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Commit-Queue: Victor Gomes <victorgomes@chromium.org>
Cr-Commit-Position: refs/heads/master@{#75503}

tools/node/fetch_deps.py

@@ -26,7 +26,6 @@ GCLIENT_SOLUTION = [
     "custom_deps" : {
       # These deps are already part of Node.js.
       "v8/base/trace_event/common"            : None,
-      "v8/third_party/googletest/src"         : None,
       # These deps are unnecessary for building.
       "v8/test/benchmarks/data"               : None,
       "v8/testing/gmock"                      : None,