krpano删除vrsetup按钮

在webvr.xml里删除这个layer

<layer name="webvr_setupbutton" keep="true" vr="true"
       style="webvr_button_style"
       html="VR Setup"
       align="bottom" y="24"
       autoalpha="true" alpha="0.0"
       onclick="vr_setup();"
       />