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: [20.011, 50, 68, 5.21, -91, 20.767, 92, -0.217, -31.341, -35, 21.889]

[50, 68, -91, 92, -35]