How to uninstall or remove classicmenu-indicator software package from Ubuntu 16.04 LTS (Xenial Xerus)

You can uninstall or removes an installed classicmenu-indicator package itself from Ubuntu 16.04 LTS (Xenial Xerus) through the terminal,

$ sudo apt-get remove classicmenu-indicator

Uninstall classicmenu-indicator including dependent package

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

$ sudo apt-get remove --auto-remove classicmenu-indicator

Use Purging classicmenu-indicator

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

$ sudo apt-get purge classicmenu-indicator

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 classicmenu-indicator