You can uninstall or removes an installed libghc-cryptohash-conduit-prof package itself from Debian 8 (Jessie) through the terminal,
$ sudo apt-get remove libghc-cryptohash-conduit-prof
If you would like to remove libghc-cryptohash-conduit-prof and it's dependent packages which are no longer needed from Ubuntu,
$ sudo apt-get remove --auto-remove libghc-cryptohash-conduit-prof
If you use with purge options to libghc-cryptohash-conduit-prof package all the configuration and dependent packages will be removed.
$ sudo apt-get purge libghc-cryptohash-conduit-prof
If you use purge options along with auto remove, will be removed everything regarding the package, It's really useful when you want to reinstall again.
$ sudo apt-get purge --auto-remove libghc-cryptohash-conduit-prof