fix: 3个bug

src/sdk/cover/index.js

@@ -13,14 +13,8 @@ export const enter = (dom, isLocal) => {
     
     
     //正式环境（本地调试会打不开）
-    if(location.host === 'mix3d.4dkankan.com' ){
-        Potree.settings.urls.prefix = Potree.settings.urls.prefix6  
-        Potree.settings.webSite = 'datav1' 
-    }else if(location.host === 'xfhd.4dkankan.com'){ 
-        Potree.settings.urls.prefix = Potree.settings.urls.prefix7  
-        Potree.settings.webSite = 'datav1' 
-    }
-    
+    for(let i in Potree.settings.urls) Potree.settings.urls[i] = ''
+    Potree.settings.urls.prefix = ''
      
     
     const tagLimitDis = 8;