Default WordPress blogs can be a pain to remove. First, you’ll need to find the blog’s URL. To do this, go to your WordPress site’s home page and look for the blog’s name in the sidebar. (If you don’t see a sidebar, click on “Posts” on the left side of the home page, and then look for “Blogs.
“) Next, locate the blog’s “Settings” page. On this page, you’ll see a box titled “Admin Email.” In this box, type the blog’s URL into the text field and hit Enter. Finally, click on the “Delete” button next to the blog’s name to remove it from your site.