[doc] Remove unneded comment about collection refs

This concern is addressed by the following mail pullreq, that will be
into 0.4.0 release:

https://github.com/leapcode/leap_mail/pull/175

By the way, it is really funny that I cannot tell if this comment was
written by meskio, as the blame says, or if I was the original author of
the remark. I should stop drinking so much coffee.

1 files changed, 0 insertions, 5 deletions

diff --git a/src/leap/bitmask/services/mail/imap.py b/src/leap/bitmask/services/mail/imap.py
index da753a0b..30646a63 100644
--- a/src/leap/bitmask/services/mail/imap.py
+++ b/src/leap/bitmask/services/mail/imap.py
@@ -93,11 +93,6 @@ def start_incoming_mail_service(keymanager, soledad, imap_factory, userid):
     # the account, and passing the mailbox to the incoming service.
     # In an even better world, we just would subscribe to a channel that would
     # pass us the serialized object to be inserted.
-    # XXX: I think we might be at risk here because the account top object
-    # currently just returns as many mailbox objects as it's asked for, so
-    # we should be careful about concurrent operations (ie, maybe just use
-    # this one to do inserts, or let account have an in-memory map of
-    # mailboxes, and just return references to them).
     acc = imap_factory.theAccount
     d = acc.callWhenReady(lambda _: acc.getMailbox(INBOX_NAME))
     d.addCallback(setUpIncomingMail)