You can uninstall or removes an installed libgbm1-lts-vivid package itself from Ubuntu 16.04 LTS (Xenial Xerus) through the terminal,
$ sudo apt-get remove libgbm1-lts-vivid
If you would like to remove libgbm1-lts-vivid and it's dependent packages which are no longer needed from Ubuntu,
$ sudo apt-get remove --auto-remove libgbm1-lts-vivid
If you use with purge options to libgbm1-lts-vivid package all the configuration and dependent packages will be removed.
$ sudo apt-get purge libgbm1-lts-vivid
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 libgbm1-lts-vivid