input: Write a function to remove all occurrences of a specified item from a given list. If the list is empty then return the list as it is. The function should return the modified list after removing the specified item.
  assert removeItem([1, 2, 3, 4, 2, 5, 2], 2)==[1, 3, 4, 5]
  assert removeItem([], 2)==[]
  assert removeItem([1, 2, 3, 1, 2, 3], 1)==[2, 3, 2, 3]
  assert removeItem([1, 2, 3, 4, 5], 6)==[1, 2, 3, 4, 5]
  assert removeItem([1, 1, 1], 1)==[]
output: def removeItem(lst, item):
      return [x for x in lst if x != item]