input: Write a python function to remove duplicates from a list, sort it, and return the sorted list.
  assert remove_duplicates_and_sort([2, 8, 5, 2, 6, 3, 4]) == [2, 3, 4, 5, 6, 8]
  assert remove_duplicates_and_sort([10, 9, 8, 10, 8, 7]) == [7, 8, 9, 10]
  assert remove_duplicates_and_sort([1, 2, 3, 1, 2, 3, 4]) == [1, 2, 3, 4]
output: def remove_duplicates_and_sort(lst):
      return sorted(set(lst))