Charles Schulz

Then go to the Layout and click EDIT in the page element for the text Title, and you will be able to see "Remove Page Element". Click that and the text title will be deleted.

However, if you like your blog to be found by others through search engines, my opinion is, it is best to leave the text Title alone as the text Title (and the description) counts high in how the search engines figure out what your blog is about, and can help direct people seeking the kind of information you have in your blog find your blog. My opinion is, it is probably better to reduce the text size of the text Title to 1 pixel, or to retain the text Title but put the image as background as explained in this post