$ sudo apt-get remove libsynfig0 

Uninstall libsynfig0 including dependent package

If you would like to remove libsynfig0 and it's dependent packages which are no longer needed from Ubuntu,

$ sudo apt-get remove --auto-remove libsynfig0 

Use Purging libsynfig0

If you use with purge options to libsynfig0 package all the configuration and dependent packages will be removed.

$ sudo apt-get purge libsynfig0 

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 libsynfig0 

See Also,