jenkins: revert log entire payload from Jenkins status end updates
jenkins: revert log entire payload from Jenkins status end updates

This reverts commit ad4f572b6c589210fdb0cc20f2ee4c3a8ebdfd2c which was
added to give more debugging info of failing ARM builds. That has been
fixed: https://github.com/nodejs/github-bot/issues/108#issuecomment-294507596

phillipj/github-bot,nodejs/github-bot