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: [-23, -23.976, 0, -81, -21, 13.935, -2.846, -45.209, 14.203]

[-23, 0, -81, -21]