Remove duplicated elements in a list.
    Args:
        lista: List with elements to clean duplicates.

def remove_list_duplicates(lista, unique=False):
    """
    Remove duplicated elements in a list.
    Args:
        lista: List with elements to clean duplicates.
    """
    result = []
    allready = []

    for elem in lista:
        if elem not in result:
            result.append(elem)
        else:
            allready.append(elem)

    if unique:
        for elem in allready:
            result = list(filter((elem).__ne__, result))

    return result