Remove copyrighted assets from codebase

Summary:
We don't own the copyright to (or have a license to distribute) this media file.

Also improve performance.

Test Plan: ↑↑↓↓←→←→BA <Enter>

Reviewers: codeblock

Reviewed By: codeblock

CC: aran

Differential Revision: https://secure.phabricator.com/D4176