unnecessary line?

[norayr]

I am connecting to not gmail server, and having this error.

Traceback (most recent call last):
  File "main.py", line 304, in <module>
    message_infos = GetMessageInfos(opts)
  File "main.py", line 104, in GetMessageInfos
    for mailbox in m.GetMailboxes():
  File "/home/nil/hey/mail-trends/mail.py", line 61, in GetMailboxes
    mailboxes.remove('[Gmail]')

It goes away if I comment line 61 in mail.py module.