remove unnecessary subclass method
remove unnecessary subclass method

rosamcgee/tangram,tangrams/tangram,ceseale/tangram,xvilan/tangram,DHaylock/tangram,zerebubuth/tangram,TitoAgudelo/tangram,TitoAgudelo/tangram,tangrams/tangram,DHaylock/tangram,zerebubuth/tangram,DHaylock/tangram,rosamcgee/tangram,ceseale/tangram,taylorhxu/tangram,rosamcgee/tangram,taylorhxu/tangram,TitoAgudelo/tangram,taylorhxu/tangram,ceseale/tangram,xvilan/tangram,xvilan/tangram,zerebubuth/tangram