It's getting rather old. There are ways to remove it, but I haven't been successful, so I'm currently leaving the page up so I can write and post. Blogger seems to offer no solutions, but frankly, I like the format and don't care for the others I've seen, including Word press. I don't want adds on my blog unless I put them there myself ( occasionally I will post in support of a friend's business).
Malwarebites says the fix ix simple, but so far I haven't been able to fix the problem.
Hang in there, gang. I'm not easily beaten.