Clean up invalid tavern notice boards

[Almad]

mysql> select count(*) from putyka_nastenky;
+----------+
| count(*) |
+----------+
|     1012 |
+----------+
1 row in set (0.00 sec)

mysql> select count(*) from putyka_stoly;
+----------+
| count(*) |
+----------+
|      518 |
+----------+
1 row in set (0.01 sec)

My bet is that notice boards were not removed properly on table deletion. Clean them up™ by writing appropriate data migration.