Do not prevent boot on database downgrade

Change-Id: I6f91d5d9ccdc7029b2c8d763ddd142129bc78803
Signed-off-by: Pranav Vashi <neobuddy89@gmail.com>

packages/LineageSettingsProvider/src/org/lineageos/lineagesettings/LineageDatabaseHelper.java

@@ -335,6 +335,11 @@ public class LineageDatabaseHelper extends SQLiteOpenHelper{
         }
     }
 
+    @Override
+    public void onDowngrade(SQLiteDatabase db, int oldVersion, int newVersion) {
+        // Do nothing.
+    }
+
     private void moveSettingsToNewTable(SQLiteDatabase db,
                                         String sourceTable, String destTable,
                                         String[] settingsToMove, boolean doIgnore) {