Revert 241558 "[Telemetry]: Add V8.MemoryHeapSampleMaximumCommit..."

Seems to have caused page_cycler.intl_ja_zh to time out on the Windows 8 perf bot.

BUG=330909

> [Telemetry]: Add V8.MemoryHeapSampleMaximumCommitted to memory metric.
> 
> BUG=None
> 
> Review URL: https://codereview.chromium.org/99863006

TBR=rmcilroy@chromium.org

Review URL: https://codereview.chromium.org/115173005

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@242649 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 242649