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: [5.972, -61, -44.508, -63, 39.878, 11.649, -0.565, 27.399, 5.598]

[-61, -63]