To uninstall oclgrind just follow these instructions.
sudo apt-get remove oclgrind
This will remove just the oclgrind package itself.
sudo apt-get remove --auto-remove oclgrind
This will remove the oclgrind package and any other dependant packages which are no longer needed.
If you also want to delete your local/config files for oclgrind then this will work.
sudo apt-get purge oclgrind
Or similarly, like this oclgrind
sudo apt-get purge --auto-remove oclgrind
|Maintainer||Debian OpenCL Maintainers <email@example.com>|
|Description||OpenCL device simulator plugin interface to facilitate the creation of tools to aid analysis and development of OpenCL programs. Among the tools that Oclgrind provides are various debugging aids, such as out-of-bounds memory access checking, data-race detection, and an interactive debugger.|