It's not difficult at all to remove album artwork from your iTunes tracks. In just a few quick, simple steps, the artwork file connected with your specific mp3s can be eliminated forever.
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Open iTunes and select a track from an album whose artwork you would like to delete.
Right-click on the track and select "Get Info" from the new menu.
In the new window, select the "Artwork" tab.
In the new window, highlight the artwork and click "Delete." Then click "OK." This will delete the artwork for the album that contains your selected track.