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.
[38.517, -1.463, 49, 94, 13, -1.362, 97, 30.993, -91, 81, 20]