fix main.timezone test for DST

mysql-test/main/timezone.result

@@ -1,4 +1,3 @@
-DROP TABLE IF EXISTS t1;
 show variables like "system_time_zone";
 Variable_name	Value
 system_time_zone	CET

mysql-test/main/timezone.test

@@ -7,13 +7,8 @@ disable_query_log;
 select FROM_UNIXTIME(24*3600);
 enable_query_log;
 
-# Initialization
---disable_warnings
-DROP TABLE IF EXISTS t1;
---enable_warnings
-
 # The following is because of daylight saving time
---replace_result MEST CET MET CET
+--replace_result MEST CET MET CET CEST CET
 show variables like "system_time_zone";
 
 #