Revert r119614 "Make auto-enrollment client retry after auto-update if the modulus limit was in..."

I initially thought r119615 was the culprit but I was wrong. Only r119614 could
now possibly make ExtensionApiTest.ProcessesVsTaskManager time out reliably on
windows.

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BUG=
TEST=

Review URL: https://chromiumcodereview.appspot.com/9295039

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@119620 0039d316-1c4b-4281-b951-d872f2087c98
8 files changed