A little knowledge can be dangerous

I guess it's Murphy's Law that it is easier to add stuff I don't want than to add stuff that I do want .... such as the Print Friendly button.  That was my "oops" of last evening - I was merely checking it out and now it seems to be a permanent fixture on my blog ... what happened to previewing?  I do realize it is quite ridiculous to have that button there since there is nothing worth printing  but I have been unable to remove it.  I believe this is a perfect example of a little knowledge can be dangerous.