Don't log info when the NotificationFilterPreferencesMigrator migration doesn't need to be executed

2019-11-22 10:09:22.013:INFO:oxtjl.NotifyListener:main: ----------------------------------
2019-11-22 10:09:22.023:INFO:oxtjl.NotifyListener:main: Server started, you can now open http://localhost:8080/ in your browser to access your wiki.
2019-11-22 10:09:22.023:INFO:oxtjl.NotifyListener:main: ----------------------------------
2019-11-22 10:10:01,209 [XWiki initialization] INFO  .HibernateDataMigrationManager - Storage schema updates and data migrations are enabled 
2019-11-22 10:10:01,544 [XWiki initialization] INFO  .HibernateDataMigrationManager - No data migration to apply for wiki [xwiki] currently in version [1138000] 
2019-11-22 10:10:01,552 [XWiki initialization] INFO  .HibernateDataMigrationManager - Checking Hibernate mapping and updating schema if needed for wiki [xwiki] 
2019-11-22 10:10:08,646 [XWiki initialization] INFO  ationFilterPreferencesMigrator - Wiki [xwiki] has already been migrated. 
2019-11-22 10:10:08,908 [org.xwiki.search.solr.internal.job.IndexerJob@6d94362b([solr, indexer])] INFO  o.x.s.s.i.j.IndexerJob         - Starting job of type [solr.indexer] with identifier [[solr, indexer]] 
2019-11-22 10:10:09,490 [org.xwiki.search.solr.internal.job.IndexerJob@6d94362b([solr, indexer])] INFO  o.x.s.s.i.j.IndexerJob         - 1 documents added, 0 deleted and 0 updated during the synchronization of the Solr index. 
2019-11-22 10:10:09,493 [org.xwiki.search.solr.internal.job.IndexerJob@6d94362b([solr, indexer])] INFO  o.x.s.s.i.j.IndexerJob         - Finished job of type [solr.indexer] with identifier [[solr, indexer]]