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: [1.446, -18, 1.974, 17.644, -88.431, 90, 38.604, -4, -69.307, 59, -7.412]

[-18, 90, -4, 59]