[dak/master] Remove unused `session` variable

[Ansgar Burchardt <ansgar@debian.org>]

The code uses the session obtained from the `ArchiveTransaction`.
---
 dak/manage_build_queues.py | 2 --
 1 file changed, 2 deletions(-)

diff --git a/dak/manage_build_queues.py b/dak/manage_build_queues.py
index 1020542..6d5b348 100755
--- a/dak/manage_build_queues.py
+++ b/dak/manage_build_queues.py
@@ -144,8 +144,6 @@ def main ():
 
     starttime = datetime.now()
 
-    session = DBConn().session()
-
     with ArchiveTransaction() as transaction:
         session = transaction.session
         if Options['All']:
-- 
2.1.4