After a long search and frustations, I found a solution for this. It should be an option in the Blog Module as an ON/OFF switch in the Elements section under Content. However, that is not possible at the moment, so here the CSS solution:

Under Blog Settings and then Advanced, one can add custom CSS. Add the following line in the contexts box:

display: none;

Tip: you can use it on all the boxes to hide specific parts of the blog element.

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