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.
[19, -9.377, 13.434, -78.749, -52, -31.326, 4, -59, -50, -67, 68]