Remove unused RenderReplaced::hasReplacedLogicalWidth()

Last user was removed with
http://src.chromium.org/viewvc/blink?view=revision&revision=171958

Review URL: https://codereview.chromium.org/341503002

git-svn-id: svn://svn.chromium.org/blink/trunk@176394 bbb929c8-8fbe-4397-9dbb-9b2b20218538