fixup! Revert some database transaction changes.

app/src/main/java/org/thoughtcrime/securesms/database/SmsDatabase.java

@@ -1228,7 +1228,6 @@ public class SmsDatabase extends MessageDatabase {
     }
 
     DatabaseFactory.getThreadDatabase(context).setHasSentSilently(threadId, true);
-    db.setTransactionSuccessful();
 
     notifyConversationListeners(threadId);