default code in Blog template

Hi - The below code was embedded on the Blog template page under theme editor. I deleted it due to the alt "pic" kept showing up on the blog page with no picture. Indicating the picture is not in my image folders, either I deleted it or it was not there from the beginning.

Does the code/picture need to be there?

<img class="img-responsive" src="/content/uploads/denver-794345_1920.jpg" alt="pic" />

I'm not seeing anything of an img tag in any of the versions that I have checked. Would it be possible to take a screen shot and post it here so I can see the exact code? It would help if the screenshot is of the whole page and not just the code.