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: [35, 41.823, -56, -58, -29, 9.213, -15]

[35, -56, -58, -29, -15]