Remove title from pages

Hi,
I would like to remove the title that is showing up on all pages on a site I’m building..

This kind of title I mean: https://d.pr/ilql

I’m using the twenty-eleven theme..

I do think that it should be relatively easy to remove that on an almost unmodified installation of twenty-eleven, but I am a starter on this kind of things, so I have no really idea on how to do so..

Any help would be really appreciated..

Thanks in advance to anyone who will take the time to answer!