diff --git a/java/ql/src/dx.ql b/java/ql/src/dx.ql
deleted file mode 100644
index 2032957996f9..000000000000
--- a/java/ql/src/dx.ql
+++ /dev/null
@@ -1,17 +0,0 @@
-/**
- * @name sm
- * @kind problem
- * @id java/sm
- * @severity warning
- */
-
-import semmle.code.java.dataflow.internal.ExternalFlowExtensions
-
-from
-  string s, string package, string type, boolean subtypes, string name, string signature,
-  string ext, string input, string output, string kind, string provenance,
-  QlBuiltins::ExtensionId madId
-where
-  summaryModel(package, type, subtypes, name, signature, ext, input, output, kind, provenance, madId) and
-  s = package + "." + type + "." + name + signature
-select s, "summary model"