Drops unused option
diff --git a/.asf.yaml b/.asf.yaml
index 53ef742..ef25d99 100644
--- a/.asf.yaml
+++ b/.asf.yaml
@@ -9,6 +9,3 @@
 jekyll:
   whoami: master
   target: asf-site
-
-github:
-  del_branch_on_merge: true