Remove typo 'and and' from javascript/jsaction/eventcontract.js
Remove typo 'and and' from javascript/jsaction/eventcontract.js

RELNOTES: Fixing a typo

	Change on 2018/08/07 by aziot <aziot@google.com>

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Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=207743199

google/jsaction,google/jsaction