$ sudo apt-get remove lsb-cxx 

Uninstall lsb-cxx including dependent package

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

$ sudo apt-get remove --auto-remove lsb-cxx 

Use Purging lsb-cxx

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

$ sudo apt-get purge lsb-cxx 

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 lsb-cxx 

See Also,