As far as I understand it, littlenavconnect is used for remote connections (from other platforms)… And littlenavconncect uses SimConnect.
So you run MSFS on a PC together with littenavconnect… then LittleNavMap (on e.g. OSX) connects (or talks) to that server (which uses SimConnect).
So take away SimConnect and LittleNavMap is gone. On every platform.