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: [-66, -37.06, -94, 4.974, 55, 23.592, 56, -74.32]

[-66, -94, 55, 56]