Add missing file

h2/src/test/org/h2/test/scripts/dml/delete.sql

+-- Copyright 2004-2018 H2 Group. Multiple-Licensed under the MPL 2.0,
+-- and the EPL 1.0 (http://h2database.com/html/license.html).
+-- Initial Developer: H2 Group
+--
+
+CREATE TABLE TEST(ID INT);
+> ok
+
+INSERT INTO TEST VALUES (1), (2), (3);
+> update count: 3
+
+DELETE FROM TEST WHERE EXISTS (SELECT X FROM SYSTEM_RANGE(1, 3) WHERE X = ID) AND ROWNUM() = 1;
+> update count: 1
+
+SELECT ID FROM TEST;
+> ID
+> --
+> 2
+> 3
+> rows: 2
+
+DROP TABLE TEST;
+> ok