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: [4.061, -71, -21.371, -20.87, 47, 40, -93]

[-71, 47, 40, -93]