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: [34.281, 91, 6, -6, -42.925, -20, 8.744, -6]

[91, 6, -6, -20, -6]