Remove CheckForUpdates log + TODO

Bug is fixed and stale logging + TODO lingering.

BUG=chromium:851151

Change-Id: I9366d12c40a37fb55fa0c099c1dbf89c3dfb740e
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2575878Reviewed-by: Joshua Pawlicki <waffles@chromium.org>
Commit-Queue: Jae Hoon Kim <kimjae@chromium.org>
Cr-Commit-Position: refs/heads/master@{#834371}

components/component_updater/component_updater_service.cc

@@ -320,9 +320,6 @@ bool CrxUpdateService::CheckForUpdates(
     UpdateScheduler::OnFinishedCallback on_finished) {
   DCHECK(thread_checker_.CalledOnValidThread());
 
-  // TODO(xiaochu): remove this log after https://crbug.com/851151 is fixed.
-  VLOG(1) << "CheckForUpdates: automatic updatecheck for components.";
-
   UMA_HISTOGRAM_ENUMERATION("ComponentUpdater.Calls", UPDATE_TYPE_AUTOMATIC,
                             UPDATE_TYPE_COUNT);