diff --git a/src/Logic.hs b/src/Logic.hs
index 37502008..fe361e0a 100644
--- a/src/Logic.hs
+++ b/src/Logic.hs
@@ -166,11 +166,6 @@ runAction config = foldFree $ \case
   TryIntegrate message (pr, ref, sha) train alwaysAddMergeCommit cont -> do
     doGit $ ensureCloned config
 
-    -- Needed for backwards compatibility with existing repositories
-    -- as we now test at testing/<pr_id> instead of testing.
-    -- When no repositories have a testing branch, this can safely be removed.
-    _ <- doGit $ Git.deleteRemoteBranch $ Git.Branch $ Config.testBranch config
-
     let targetBranch = fromMaybe (Git.Branch $ Config.branch config) (trainBranch train)
 
     shaOrFailed <- doGit $ Git.tryIntegrate