replication: remove log_level = debug from tests

test/replication/autobootstrap.lua

@@ -15,7 +15,7 @@ require('console').listen(os.getenv('ADMIN'))
 
 box.cfg({
     listen = instance_uri(INSTANCE_ID);
-    log_level = 7;
+--    log_level = 7;
     replication = {
         USER..':'..PASSWORD..'@'..instance_uri(1);
         USER..':'..PASSWORD..'@'..instance_uri(2);

test/replication/autobootstrap_guest.lua

@@ -14,7 +14,7 @@ require('console').listen(os.getenv('ADMIN'))
 
 box.cfg({
     listen = instance_uri(INSTANCE_ID);
-    log_level = 7;
+--    log_level = 7;
     replication = {
         instance_uri(1);
         instance_uri(2);