$ sudo apt-get remove libgloox11 

Uninstall libgloox11 including dependent package

If you would like to remove libgloox11 and it's dependent packages which are no longer needed from Ubuntu,

$ sudo apt-get remove --auto-remove libgloox11 

Use Purging libgloox11

If you use with purge options to libgloox11 package all the configuration and dependent packages will be removed.

$ sudo apt-get purge libgloox11 

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 libgloox11 

See Also,