remove returns in function definition

src/test/resources/sql/function/Test1/function_test_duplicate.sql

@@ -1,8 +1,8 @@
-CREATE OR REPLACE FUNCTION test_function_duplicate (name text default 'plop', out result json)
-LANGUAGE plpgsql
+CREATE OR REPLACE FUNCTION test_function_duplicate (name text default 'plop') returns json
+    LANGUAGE plpgsql
 AS
 $$
 BEGIN
-    result = json_build_object('id', 3, 'name', name);
+    return json_build_object('id', 3, 'name', name);
 END;
-$$
+$$

src/test/resources/sql/function/Test2/function_test_duplicate.sql

@@ -1,8 +1,8 @@
-CREATE OR REPLACE FUNCTION test_function_duplicate (name text default 'plop') returns text
+CREATE OR REPLACE FUNCTION test_function_duplicate (name text default 'plop', out result text)
     LANGUAGE plpgsql
 AS
 $$
 BEGIN
-    return name;
+    result = name;
 END;
 $$