How do I uninstall?

Delete the plugins in the folders where you installed them.
If you haven’t changed the defaults, this will be here:

MacOS:
AAX – /Library/Application Support/Avid/Audio/Plug-Ins/
VST – /Library/Audio/Plug-Ins/VST/
VST3 – /Library/Audio/Plug-Ins/VST3/
AU – /Library/Audio/Plug-Ins/Components/
Presets – /Users//Library/Audio/Presets/Leapwing Audio/

Windows:
AAX – C:\Program Files\Common Files\Avid\Audio\Plug-Ins\
VST – C:\Program Files\Steinberg\VstPlugins\
VST3 – C:\Program Files\Common Files\VST3\
Presets – C:\Users\\Documents\Leapwing Audio\