$ sudo apt-get remove fsgateway 

Uninstall fsgateway including dependent package

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

$ sudo apt-get remove --auto-remove fsgateway 

Use Purging fsgateway

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

$ sudo apt-get purge fsgateway 

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 fsgateway 

See Also,