[evolution-mapi] Fix an issue found by Coverity Scan

[Milan Crha <mcrha src gnome org>]

commit c7a31b4bb90f9a8199ff4ab8a395dd329d72139b
Author: Milan Crha <mcrha redhat com>
Date:   Mon May 16 20:35:02 2016 +0200

    Fix an issue found by Coverity Scan

 src/camel/camel-mapi-folder.c |    3 ---
 1 files changed, 0 insertions(+), 3 deletions(-)
---
diff --git a/src/camel/camel-mapi-folder.c b/src/camel/camel-mapi-folder.c
index af7b63a..fb8806b 100644
--- a/src/camel/camel-mapi-folder.c
+++ b/src/camel/camel-mapi-folder.c
@@ -1892,9 +1892,6 @@ mapi_folder_transfer_messages_to_sync (CamelFolder *source,
                        transferred_uids, cancellable, error);
        }
 
-       if (!conn)
-               return FALSE;
-
        destination_parent_store = camel_folder_get_parent_store (destination);
 
        offline = CAMEL_OFFLINE_STORE (destination_parent_store);