diff --git a/lib/domains/ng/edu/c3longthanh.txt b/lib/domains/ng/edu/c3longthanh.txt
deleted file mode 100644
index 561b4a185b..0000000000
--- a/lib/domains/ng/edu/c3longthanh.txt
+++ /dev/null
@@ -1 +0,0 @@
-Trường THPT Long Thành