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: [-49.406, 54.565, -4.397, -39.705, -1.314, -57, 0.913, -52, -15]

[-57, -52, -15]