remove unused light shader file
remove unused light shader file

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