input: Write a function to remove all occurrences of a specified item from a given list. Return the modified list. If the list is empty, return an empty list.
  assert removeItem([1, 2, 3, 4, 2, 5, 2], 2)==[1, 3, 4, 5]
  assert removeItem([5, 5, 5, 3, 5], 5)==[3]
  assert removeItem([9, 3, 6, 3, 1], 3)==[9, 6, 1]
  assert removeItem([7, 8, 9], 10)==[7, 8, 9]
  assert removeItem([], 1)==[]
output: def removeItem(lst, item):
      return [x for x in lst if x != item]