input: Write a function called removeItem that takes a list and an item as parameters and returns a new list with all occurrences of the specified item removed.
  assert removeItem([1, 2, 3, 4, 2, 5, 2], 2) == [1, 3, 4, 5]
output: def removeItem(lst, item):
      return [x for x in lst if x != item]