Removing a Rendering Extension
To remove a Reporting Services rendering extension, simply remove the Extension element for your rendering extension from the ReportServer.config file, located in C:\Program Files\Microsoft SQL Server\MSSQL\Reporting Services\ReportServer\Bin folder. If you made entries for a Report Designer as well as a report server, remove the Extension element from the RSReportDesigner Configuration File as well. After the configuration information is removed, the rendering extension is no longer available to the component.
See Also
Concepts
Implementing a Rendering Extension
Introducing Rendering Extensions
Implementing the IRenderingExtension Interface
Security Considerations for Extensions
Deploying a Rendering Extension
Other Resources
Reporting Services Configuration Files