Disable query whose result depends on current date

Author: julianhyde

core/src/test/resources/sql/rule/reduce-expressions.iq

@@ -589,7 +589,8 @@ select cast(time '12:34:56' as timestamp) from emp as e;
 +---------------------+
 (14 rows)
 
-!ok
+!type
+# Not '!ok' because execution results depend on the current date.
 LogicalProject(EXPR$0=[CAST(12:34:56):TIMESTAMP(0) NOT NULL])
   LogicalTableScan(table=[[CATALOG, SALES, EMP]])
 !sub-plan "NONE"