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: [-21, 75.748, 36.483, 30, -32.439, -20, -6.476, -54]

[-21, 30, -20, -54]