diff --git a/_config.php b/_config.php
deleted file mode 100644
index 31684ea9..00000000
--- a/_config.php
+++ /dev/null
@@ -1,5 +0,0 @@
-<?php
-
-use SilverStripe\Dev\Deprecation;
-
-Deprecation::notification_version('3.0', 'silverstripe/fulltextsearch');