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: [20, -6.197, -49, 4, -14.922, -5.179, -17, 9.494, -20.872]

[20, -49, 4, -17]