bindings: Retires auto-generated wrap / createWrapper functions.

This CL removes auto-generated wrap and createWrapper functions.

BUG=235436

Review URL: https://codereview.chromium.org/692523002

git-svn-id: svn://svn.chromium.org/blink/trunk@184924 bbb929c8-8fbe-4397-9dbb-9b2b20218538