cocos2d how to remove this layer

Based on a CCLayerColor layer, layer, there are menu when clicking on a menu item on the menu, it is the layer removed.

May I ask what function can delete the layer ah?
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Embarrassing! Know how to do it! Who will pick points? ? ? ? ? ? ? ? ?
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I Come! ! Thank you
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The most important thing is cocos2d layer concept. Layer is a node, so you just removeChild on the line.
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Found that the layer can be used removeFromParent