diff --git a/core/trino-main/src/main/java/io/trino/execution/DataDefinitionTask.java b/core/trino-main/src/main/java/io/trino/execution/DataDefinitionTask.java
index 5b17b4dfc71c..e8e91c8301fb 100644
--- a/core/trino-main/src/main/java/io/trino/execution/DataDefinitionTask.java
+++ b/core/trino-main/src/main/java/io/trino/execution/DataDefinitionTask.java
@@ -29,9 +29,4 @@ ListenableFuture<Void> execute(
             QueryStateMachine stateMachine,
             List<Expression> parameters,
             WarningCollector warningCollector);
-
-    interface ExplainDataDefinition<T extends Statement>
-    {
-        String explain(T statement, List<Expression> parameters);
-    }
 }