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: [22.559, -1.565, -2.928, 76, -4.51, -5.242, -18.001, -90, 15]

[76, -90, 15]