diff --git a/_config.php b/_config.php
deleted file mode 100644
index 808cb68a..00000000
--- a/_config.php
+++ /dev/null
@@ -1,6 +0,0 @@
-<?php
-
-// Set to 3.0.0 to show APIs marked for removal at that version
-use SilverStripe\Dev\Deprecation;
-
-Deprecation::notification_version('4.0.0', 'silverstripe/graphql');