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We're updating our build to ensure that all html files are auto
generated and jscompiled. This html file is being removed now (rather
than updated to be jscompiled) because we intend to remove the
It2MeHelpeeChannel code in the near future.

BUG=

Review URL: https://codereview.chromium.org/979483002

Cr-Commit-Position: refs/heads/master@{#318992}