simplify test queries [#CLICKHOUSE-2979]

dbms/tests/queries/0_stateless/00203_full_join.sql

@@ -19,6 +19,6 @@ CREATE TABLE t2 (val_t2 String, k3 UInt32, k2_alias UInt32, k1 UInt32) ENGINE=Ti
 INSERT INTO t1 VALUES (1, 2, 3, 'aaa'), (2, 3, 4, 'bbb');
 INSERT INTO t2 VALUES ('ccc', 4, 3, 2), ('ddd', 7, 6, 5);
 
-SELECT k1, k2, k3, val_t1, val_t2 FROM (SELECT * FROM t1) ANY FULL JOIN (SELECT * FROM t2) USING (k3, k1, k2 AS k2_alias) ORDER BY k1, k2, k3;
+SELECT k1, k2, k3, val_t1, val_t2 FROM t1 ANY FULL JOIN t2 USING (k3, k1, k2 AS k2_alias) ORDER BY k1, k2, k3;
 
-SELECT k1, k2, k3, val_t1, val_t2 FROM (SELECT * FROM t1) ANY RIGHT JOIN (SELECT * FROM t2) USING (k3, k1, k2 AS k2_alias) ORDER BY k1, k2, k3;
+SELECT k1, k2, k3, val_t1, val_t2 FROM t1 ANY RIGHT JOIN t2 USING (k3, k1, k2 AS k2_alias) ORDER BY k1, k2, k3;