I received the following mail form Apple, considering my application:
Thank you for submitting your update to Νομοθεσία to the App Store. During our revie
I would recommend not publicly venting about the issue (that will only hurt you in the long run), but responding politely to the application review email address you were given, explaining that you are using a custom SQLite build which references the ICU framework. Given that this is a standard third-party framework, I would argue that these are not Apple's private APIs that you are using. It may be that they were simply overzealous in the inclusion of symbols in their scanning software.
If you are unable to convince them otherwise, you might contemplate switching from SQLite with FTS3 to something like Aaron Hillegass' BNRPersistence, which just added fast full-text searching.