User – How do I remove custom links if I do not know how to place them?

Drupal 7,61

A few months ago, I changed the / user page to show 2 links instead of the default / user page content:
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… while the page / user / xxx / edit remains unchanged:

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I want to undo this change and return to the default / user page. but I do not remember how I could do that; so I can not undo it.

I feel a bit ridiculous to be in this situation, but any help is welcome.