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: [-43, -9, -4.34, 0.405, 2.768, 21, -68.897, -42, 92, -21.673]

[-43, -9, 21, -42, 92]