From the AAMC:
"Medical schools do not have any record of exams which you chose to void or no-show, nor do they have the ability to access a system that shows them whether you voided or no-showed. Only you will have a record of these exams through the MCAT Score Reporting System. Medical schools only have access to the exams you chose to score. Remember, voids and no-shows count as an attempt toward your testing limits."
You can read it
here under the
MCAT Scores FAQ tab.