You can uninstall or removes an installed libghc-gtk-dev-0.12.5.6-35d59 package itself from Debian 8 (Jessie) through the terminal,
$ sudo apt-get remove libghc-gtk-dev-0.12.5.6-35d59
If you would like to remove libghc-gtk-dev-0.12.5.6-35d59 and it's dependent packages which are no longer needed from Ubuntu,
$ sudo apt-get remove --auto-remove libghc-gtk-dev-0.12.5.6-35d59
If you use with purge options to libghc-gtk-dev-0.12.5.6-35d59 package all the configuration and dependent packages will be removed.
$ sudo apt-get purge libghc-gtk-dev-0.12.5.6-35d59
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-gtk-dev-0.12.5.6-35d59