To uninstall tk8.5-dev just follow these instructions.
/ubuntu/yakkety/universe///install/index.html Tk toolkit for Tcl and X11, v8.5 - development files Ubuntu 16.10 universe/devel 8.5.19-1ubuntu1
sudo apt-get remove tk8.5-dev
Which will remove just the tk8.5-dev package itself.
sudo apt-get remove --auto-remove tk8.5-dev
This will remove the tk8.5-dev package and any other dependant packages which are no longer needed.
If you also want to delete your local/config files for tk8.5-dev then this will work.
sudo apt-get purge tk8.5-dev
Or similarly, like this tk8.5-dev
sudo apt-get purge --auto-remove tk8.5-dev
|Description||Tk toolkit for Tcl and X11, v8.5 - development files|