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