Dashboard cleanup: remove dashboard time logging.
https://bugs.webkit.org/show_bug.cgi?id=111608

Reviewed by Dirk Pranke.

Remove logTime.  It was never accurate, and the dev tools
have better ways to measure this if anyone cares to look
into dashboard perf.

* TestResultServer/static-dashboards/dashboard_base.js:
* TestResultServer/static-dashboards/flakiness_dashboard.js:
(processTestRunsForBuilder):
(appendHTML):


git-svn-id: http://svn.webkit.org/repository/webkit/trunk@144968 268f45cc-cd09-0410-ab3c-d52691b4dbfc