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: [55.439, -55.417, -28.943, -31, -72.539, -50, -68.622, 5.449]

[-31, -50]