Definition: In this task you will be given a list of numbers. You should remove any number that is not an integer (whole number). If every number is not an whole number then an empty list ("[]") should be returned. Otherwise, answer with the list of whole numbers separated by comma inside brackets.
Input: [11.261, -16, -79.888, 13, -18.321, 7.622, 69, 13.592, 91]

[-16, 13, 69, 91]