Edited a template, but cannot remove the original text that's not necessary now

Hello 

Please could someone help? I have edited a template but when I preview the interaction, I see text that I don't need. I understand that there's grouped content on the original tab. I open it, but don't see title as a text box that I can remove.   The same is true for all tabs on the template (Tabs template in Serenity). 

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