To Delete Lights
1. On the View tab, click 
Scenes and click 
Edit Scene on the gallery. The Scene Editor dialog box opens.
Scenes and click Edit Scene on the gallery. The Scene Editor dialog box opens.2. Click the Lights tab.
3. Select the light you want to delete from the Light List. You can delete all the lights in the list except the default lights.
4. Click 
to delete the selected light.
to delete the selected light.