Uninstalling Virto Forms
To uninstall the solution:
Run the setup program extracted from the downloaded package: SetupSE.exe for SharePoint Server Subscription Edition, Setup.exe for the other versions.
The program performs the system checks again. Once that has successfully completed, the program prompts you to Repair or Remove the solution. Select Remove, and click “Next”.

Note: after uninstalling Virto Forms, all the settings applied to SharePoint lists with the component will be removed.