public boolean removePreView(String viewName) {
        for (int i = 0; i < preViewPorts.size(); i++) {
            if (preViewPorts.get(i).getName().equals(viewName)) {
                preViewPorts.remove(i);
                return true;
            }
        }
        return false;
    }
Removes the pre ViewPort with the specified name.

@param viewName The name of the pre ViewPort to remove
@return True if the ViewPort was removed successfully.

@see #createPreView(java.lang.String, com.jme3.renderer.Camera)
jme3-core/src/main/java/com/jme3/renderer/RenderManager.java