First perform a default install of Servoy to make sure you have all required components.
On Windows:
-Delete servoy_developer.bat and servoy_developer.jar from the Servoy directory
-If you created shortcuts at install delete them
On Macintosh:
-Delete the Servoy icon (application) and servoy_developer.jar from the Servoy folder
On Linux and other Unix systems:
-Delete servoy_developer.jar from the Servoy directory