Hi @paulinolan,
as changing the mail is a standard feature and set up as you create your page, there's no click solution for that.
What you need to do is use your profile page, go into javascript and hide that specific row of the table.
That code snippet does the trick for me. In case it is not working for you. Go to your profile page open the console and copy the css selector to paste it into jQuery as below.
$('a.list-group-item:nth-child(2)').hide()
Actually you will not "delete" the function with that, but hide it.
You can also use .remove() to actually delete it from the DOM.
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Hope that helps.
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