[geary/wip/fix-error-on-goa-account-disabled] Remove obsolete comment

[Michael Gratton <mjog src gnome org>]

commit 1e826e9f5d760afb7542ed635090e224c9c03ab3
Author: Michael Gratton <mike vee net>
Date:   Wed Mar 6 20:44:44 2019 +1100

    Remove obsolete comment

 src/client/accounts/accounts-manager.vala | 2 --
 1 file changed, 2 deletions(-)
---
diff --git a/src/client/accounts/accounts-manager.vala b/src/client/accounts/accounts-manager.vala
index 967a2710..a46cba55 100644
--- a/src/client/accounts/accounts-manager.vala
+++ b/src/client/accounts/accounts-manager.vala
@@ -858,8 +858,6 @@ public class Accounts.Manager : GLib.Object {
                 ));
         }
 
-        // XXX need to notify the engine that creds may have changed
-
         set_available(account, is_available);
     }