Revert "DevTools: Use script mappings to linkify console messages"

TBR=vsevik
BUG=357958

Review URL: https://codereview.chromium.org/677523004

git-svn-id: svn://svn.chromium.org/blink/trunk@184666 bbb929c8-8fbe-4397-9dbb-9b2b20218538