input: Write a python function to remove repeated elements from a list.
  assert removeRepeats([2, 3, 3, 4, 5, 4]) == [2, 3, 4, 5]
  assert removeRepeats([1, 1, 1, 1, 1, 1]) == [1]
  assert removeRepeats([7, 8, 9, 7, 8, 9]) == [7, 8, 9]
  assert removeRepeats([5, 10, 10, 5, 10, 5]) == [5, 10]
output: def removeRepeats(lst):
      return list(dict.fromkeys(lst))