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: [-17, 30, 24.074, 9, -1, -78, 8.206, 15, -2.618, 21.661]

[-17, 30, 9, -1, -78, 15]