Revert "migrate code from googleapis/cloud-profiler-nodejs"

[sofisl]

Reverts #7087

didn't merge commit

[snippet-bot]

Here is the summary of changes.

You are about to delete 2 region tags.

• handwritten/cloud-profiler/samples/app.js:17, tag profiler_setup_nodejs_app_engine
• handwritten/cloud-profiler/samples/snippets.js:17, tag profiler_setup_nodejs_compute_engine

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