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, -10.4, 96, -30.177, 30.887, -12.75, -20.471, -23.305, -68, -47.173, -78]