diff --git a/lib/domains/ac/rs.txt b/lib/domains/ac/rs.txt
deleted file mode 100644
index 3fe60fc0a3..0000000000
--- a/lib/domains/ac/rs.txt
+++ /dev/null
@@ -1,2 +0,0 @@
-東京理科大学
-Tokyo University of Science
\ No newline at end of file