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: [-4.015, -25.849, 21, -25, -25.557, -77, -50, -43.752, 37, 91]

[21, -25, -77, -50, 37, 91]