To uninstall our plugins, you will need to delete the plugin file from their folders:
C:\Program Files\Common Files\VST3\
C:\Program Files\Common Files\Avid\Audio\Plug-Ins
C:\Program Files\Common Files\Digidesign\DAE\Plug-Ins
Then, in each folder, find the plugin you want to uninstall and move it to the Trash.
(Note that if you are using a custom VST folder, you will also need to trash the plugin files from that location as well.)