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: [16, 6.564, 7.644, -90, 56.111, 5, 2.241, -15]

[16, -90, 5, -15]