message: fix wrong method name
diff: @@ -30,9 +30,9 @@ class Solution(object):
  if not head: return head
  if head.next:
  if head.val == head.next.val:
  - head = self.deleteDuplicates(head.next)
  + head = self.deleteDuplicates2(head.next)
  else:
  - head.next = self.deleteDuplicates(head.next)
  + head.next = self.deleteDuplicates2(head.next)
  return head
  