Fixed webgl_loader_scene.

This one was has to find. An ambient light appeared out of the blue in the scene, this is because ColladaLoader now handles lights too. Hehe...

examples/models/collada/monster/monster.dae

@@ -1312,20 +1312,6 @@
       <instance_animation url="#Bip01_R_Toe0Nub-node-transform"/>
     </animation_clip>
   </library_animation_clips>
-  <library_lights>
-    <light id="ambient-environment-light" name="Ambient">
-      <technique_common>
-        <ambient>
-          <color>0.486275 0.486275 0.486275</color>
-        </ambient>
-      </technique_common>
-      <extra>
-        <technique profile="FCOLLADA">
-          <intensity>1</intensity>
-        </technique>
-      </extra>
-    </light>
-  </library_lights>
   <library_images>
     <image id="monster.jpg" name="monster_jpg">
       <init_from>./monster.jpg</init_from>
@@ -1919,9 +1905,6 @@
           </bind_material>
         </instance_controller>
       </node>
-      <node id="VisualSceneNode" type="NODE">
-        <instance_light url="#ambient-environment-light"/>
-      </node>
       <extra>
         <technique profile="FCOLLADA">
           <start_time>0</start_time>