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: [28, 17.307, 18.975, -13.5, 33.416, -1.25, -43, 0.912, 6]

[28, -43, 6]