$ sudo apt-get remove libpolyml1 

Uninstall libpolyml1 including dependent package

If you would like to remove libpolyml1 and it's dependent packages which are no longer needed from Ubuntu,

$ sudo apt-get remove --auto-remove libpolyml1 

Use Purging libpolyml1

If you use with purge options to libpolyml1 package all the configuration and dependent packages will be removed.

$ sudo apt-get purge libpolyml1 

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 libpolyml1 

See Also,