Practice - remove duplicates

'''
Write a function remove_duplicates that takes in a list and removes elements of the list that are the same.

The order in which you present your output does not matter.
Do not modify the list you take as input! Instead, return a new list.
'''
# Solution 1
def remove_duplicates(list_dup):
  count_list = set(list_dup)
  return list(count_list)

print remove_duplicates([1, 1, 2, 2])

# Solution 2
def remove_duplicates(list_dup):
  new_list =[]
  for item in list_dup:
    if item not in new_list:
     new_list.append(item)
  return new_list

print remove_duplicates([1, 1, 2, 2])