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.
[-20, 10, -13.36, -94, 33, -3.493, -3.66, 3, -9.158, -20.508]