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: [-43.061, -6.627, -29.561, -9.183, -5.493, 90, 29.595, 15.505, -4]

[90, -4]