LOG(INFO) tidying in remoting/

Some deletions, some to VLOG, some to ERROR.

R=sergeyu@chromium.org, wez@chromium.org
BUG=322805

Review URL: https://codereview.chromium.org/82923009

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@237092 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 237092