I did a W3C validation of my wordpress website and I got several warnings like this:

The navigation role is unnecessary for element nav.

r">↩ <nav role="navigation" class="elementor-nav-menu--main elementor-nav-menu__container elementor-nav-menu--layout-horizontal e--pointer-none"><ul id

My doubts:
Is this role really necessary?
I know that this may be necessary for older browsers that don’t recognise HTML5 elements, but I think that this may affect websites pagerank. I read that Google penalizes your pagerank when you have warnings in your HTML.

In case these warnings affect the pagerank, I wonder if there is a way to deactivate/remove this attribute from all elements, so like that I could have a validation without any error or warning.