removed unused class
removed unused class

gamedevforks/LumixEngine,zhouxh1023/LumixEngine,JakubLukas/LumixEngine,zhouxh1023/LumixEngine,galek/LumixEngine,JakubLukas/LumixEngine,JakubLukas/LumixEngine,galek/LumixEngine,dreamsxin/LuxEngine,dreamsxin/LuxEngine,gamedevforks/LumixEngine