There are a couple of ways of uninstalling the Canto Adobe Connector


Adobe Creative Cloud


To remove the extension via Adobe Creative Cloud -


Open your Creative Cloud app >  Marketplace > Manage Plugins > click on the icon with 3 dots > Uninstall



Windows


To remove the extension on Windows go to:

C:\Program Files (x86)\Common Files\Adobe\CEP\extensions\

Next, remove the folder titled com.canto.adobeconnector and you're all set!


Mac


To remove the extension on macOS, go to: 

/Library/Application Support/Adobe/CEP/extensions/

Next, remove the folder titled com.canto.adobeconnector and you're all set!