Update notes for submitted changes

* LT-13693 Remove unused references from projects and files  * Remove reference to ManagedLgIcuCollator (JIRA issue    FWNX-296 records that ManagedLgIcuCollator is temporarily    disabled on Windows.)  * Correct how allCsharpNoTests target gets created    (FieldWorks.targets contains target allCsharpNoTests which    is auto-generated. Unfortunately, it contained three    dependencies which were only used in unit tests.)  * Remove obsolete NAnt build files. (They were causing    confusion when trying to detect source of various files    in Output\Release.)