Hmmm, I don't see a way to delete lyrics to more than one song at a time in iTunes.
To delete lyrics from a single song:
Start iTunes on your computer, select the song from which you want to delete lyrics, do "Get Info," go to lyrics tab, delete lyrics, click "Ok."
To mass delete lyrics from many songs at once, you'll need to find and download an mp3 tag editor.
omg. thank you so much. i cant believe how easy that was. i have been sitting around all day trying to delete the lyrics but they kept showing up and your solution fix it . thanks