input: Write a function to remove all the duplicates from a linked list in Python.
  
      class Node: 
          def __init__(self, data): 
              self.data = data 
              self.next = None 
      
      class LinkedList: 
          def __init__(self): 
              self.head = None
  
          def remove_duplicates(self, list_nodes):
              curr_node = self.head 
              new_list = []
              while curr_node != None: 
                  if curr_node.data not in new_list: 
                      new_list.append(curr_node.data) 
                  curr_node = curr_node.next
                      
              self.head = None
              for i in new_list:
                  self.insert_node(i)
          
          def insert_node(self, data): 
              new_node = Node(data) 
              if self.head is None: 
                  self.head = new_node 
                  return
              last = self.head 
              while (last.next): 
                  last = last.next
              last.next =  new_node
output: def remove_duplicates(self, list_nodes):
      curr_node = self.head 
      new_list = []
      while curr_node != None: 
          if curr_node.data not in new_list: 
              new_list.append(curr_node.data) 
          curr_node = curr_node.next
                  
      self.head = None
      for i in new_list:
          self.insert_node(i)