Question about Music Supplement

I recently submitted my Common Application to various schools and I indicated that I wanted to submit a music supplement as part of my application, but I recently decided on not doing so. I realize that you cannot change your decision on the Common App as a pdf has already been sent to the colleges. Should I email the admissions officers about my change in plans or does in not really matter? I guess I am just worried that it might appear that I just missed the deadline.