Revert "TT#38157 fix create ngcp.timezone if not exists"

This reverts commit 79d2019dc5.

Change-Id: I23f27a6310428751fa0185a3cae73f1f7ca249fe

db_scripts/diff/15373_not_replicated.up

@@ -2,7 +2,7 @@ set sql_log_bin=0;
 set autocommit=0;
 USE billing;
 
-CREATE TABLE IF NOT EXISTS ngcp.timezone
+CREATE TABLE ngcp.timezone
 (
     id enum('1') not null primary key,
     name varchar(255) not null,