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.
[21, -97, -35.838, -62.643, 28.47, 18, 12.221, -23, -46, 80, -4.856]