removed unused attribute

Author: Jérémy Gaillard

src/Globe/TileMesh.js

@@ -146,7 +146,6 @@ define('Globe/TileMesh', [
 
     TileMesh.prototype.setGeometry = function(geometry) {
         this.hasGeometry = true;
-        this.cullable = true;
 
 
         this.geometry = geometry;

src/Scene/BrowseTree.js

@@ -162,7 +162,7 @@ define('Scene/BrowseTree', ['Globe/TileMesh', 'THREE'], function( TileMesh, THRE
         for (var i = 0; i < node.children.length; i++) {
             var child = node.children[i];
             // TODO node.wait === true ---> delete child and switch to node.wait = false
-            if (this._clean(child, level, process, camera) && ((child.level >= level && child.children.length === 0 && child.cullable && !process.checkSSE(child, camera) /*&& !node.wait*/) /*|| node.level === 2*/))
+            if (this._clean(child, level, process, camera) && ((child.level >= level && child.children.length === 0 && !process.checkSSE(child, camera) /*&& !node.wait*/) /*|| node.level === 2*/))
                 childrenCleaned++;
         }
 

src/Scene/Node.js

@@ -24,7 +24,6 @@ define('Scene/Node', [], function() {
         this.screenSpaceError = 0.0;
         this.visible = true;
         this.layer = null;
-        this.cullable = false;
         this.disposed = false;