[Trivial] Remove console.log spam from flakiness_dashboard.js

[Trivial] Remove console.log spam from flakiness_dashboard.js

This patch removes a console.log from the flakiness dashboard that
would write the number of tests to the console.

Committed: https://src.chromium.org/viewvc/blink?view=rev&revision=178015

[eseidel, 2014-07-13 23:22:20]

lgtm

[eseidel, 2014-07-13 23:22:38]

I can't imagine anyone will complain about this. If they do, it's trivial to add
back.  rslgtm.

[commit-bot: I haz the power, 2014-07-13 23:23:10]

CQ is trying da patch. Follow status at
 https://chromium-status.appspot.com/cq/pdr@chromium.org/389183002/1

[commit-bot: I haz the power, 2014-07-14 00:34:34]

FYI, CQ is re-trying this CL (attempt #1).
The failing builders are:
  win_blink_compile_dbg on tryserver.blink
(http://build.chromium.org/p/tryserver.blink/builders/win_blink_compile_dbg/bu...)

[commit-bot: I haz the power, 2014-07-14 00:53:04]

Change committed as 178015