Python: write the body of the function

def new_data(data: list, count: int) -> None: """Update data so that count elements have been removed from the end.

Preconditions: - count >= 0

- len(raw_data) >= count

>>> lst = [[72.3, 69.5, 70.0, 70.3, 70.5, 70.7, 72.9]]

>>>new_data(lst,3)

>>> lst [[72.3, 69.5, 70.0, 70.3]]