It is software you installed yourself (/opt/ is purely used for 3rd party applications you install yourself from mostly pre-compiled archives (tar.gz or something similar) and not from USC or a debian install file (if software did automatically get installed there from Ubuntu Software Center or even a debian installer (.DEB). The FileSystem Hierarchy we use has a strict rule on using /opt/)).
What you installed is probably clickpkg as part of their Ubuntu tasks app set (Ubuntu Tasks is a task management app written for Ubuntu Touch as part of the Ubuntu App Showdown.).
/opt/ is not used by "apt-get". If you want to get rid of it all you need to do to issudo rm -rf /opt/clickpkg. All software related to it -must- be in that directory when using /opt/ as an installation location.