ref: 17fc6bd66ef2b2390afb1614e7d62c1ccf52a375
parent: d93488448e5dc99e1cf85911be88ba879bbbecb2
author: Martin Storsjö <martin@martin.st>
date: Tue Jun 10 05:39:30 EDT 2014
Remove the unnecessary method WelsTraceModuleIsExist(), which always returned true