消除connection

Ref : http://stackoverflow.com/questions/24523086/xcode-interface-builder-correct-way-to-delete-rename-miswired-iboutlets-ib

Method One

Right click the view in the storyboard and then click the little x by the referencing outlet.

Method Two

Right click the view name in the Document Outline. Then click the little x by the referencing outlet.

Method Three

Select the view on the storyboard and then click the Connections Inspector. Then you can click the little x to remove an outlet reference.

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