Remove copypata "require 'sdl'" pattern
Remove copypata "require 'sdl'" pattern

Summary:Confirmed with locronan that this was a bit of a historical
accident.

Reviewed By: soumith

Differential Revision: D2011223

fb-gh-sync-id: c7663f14637a532bd0efb45b3fb09e6c8ea33154
shipit-source-id: c7663f14637a532bd0efb45b3fb09e6c8ea33154

facebook/fblualib,facebook/fblualib