other: revert the test case

tests/script/tsim/sync/vnodesnapshot-test.sim

@@ -49,7 +49,7 @@ $replica = 3
 $vgroups = 1
 
 print ============= create database
-sql create database db replica $replica vgroups $vgroups retentions 3s:7d,5s:21d,15s:365d
+sql create database db replica $replica vgroups $vgroups
 
 $loop_cnt = 0
 check_db_ready:
@@ -113,7 +113,7 @@ endi
 
 vg_ready:
 print ====>  create stable/child table
-sql create table stb (ts timestamp, c1 int, c2 float, c3 double) tags (t1 int) rollup(max)
+sql create table stb (ts timestamp, c1 int, c2 float, c3 double) tags (t1 int)
 
 sql show stables
 if $rows != 1 then 
@@ -149,7 +149,7 @@ system sh/exec.sh -n dnode1 -s stop -x SIGINT
 system sh/exec.sh -n dnode2 -s stop -x SIGINT
 system sh/exec.sh -n dnode3 -s stop -x SIGINT
 
-sleep 10000
+sleep 3000
 
 ########################################################
 print ===> start dnode1 dnode2 dnode3 dnode4