diff --git a/devstack/override-defaults b/devstack/override-defaults
deleted file mode 100755
index b312171c5b..0000000000
--- a/devstack/override-defaults
+++ /dev/null
@@ -1,5 +0,0 @@
-#!/bin/bash
-
-# NOTE(jroll) this is used for the transition to a devstack plugin in
-# the ironic tree, and can be removed when the transition is complete.
-IRONIC_USING_PLUGIN=True