The installation folder to WLW is:
C:\Program Files (x86)\Windows Live\Writer\Plugins
You can remove the DLL's from there and they won't show up anymore, nor work.
OR
in Windows Live Writer » TOOLS » PLUG-INS
Go through the plug-ins that are installed and choose to ENABLE or DISABLE the plug-ins you want to use; very useful for troubleshooting.
Just trying to help...
Thanks,
L. Henry Jr.
http://www.lehsys.com