build: Clean up errant references to gerrit
Also delete extremely old Travis CI file.
Bug: T334397 Change-Id: I67e8b718775ea572a9b1611b99bcdb0efa1fa63b
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Also delete extremely old Travis CI file.
Bug: T334397 Change-Id: I67e8b718775ea572a9b1611b99bcdb0efa1fa63b