$ sudo apt-get remove libgdiplus 

Uninstall libgdiplus including dependent package

If you would like to remove libgdiplus and it's dependent packages which are no longer needed from Ubuntu,

$ sudo apt-get remove --auto-remove libgdiplus 

Use Purging libgdiplus

If you use with purge options to libgdiplus package all the configuration and dependent packages will be removed.

$ sudo apt-get purge libgdiplus 

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 libgdiplus 

See Also,