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: [2, -23.846, -54.667, -40, 42.931, -38.43, -4, 34.406]

[2, -40, -4]