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.

[31.44, -29.248, 21]
[21]

[6.963, 43, 13.525, -61, -22.382, 60, -42, 71]
[43, -61, 60, -42, 71]

[-5.389, -60.703, 35.66, 23.897, 23, -64, 5, -47.753, 91, 77.795, -69]

[23, -64, 5, 91, -69]