Remove www/pecl-geoip?

[Frederic Cambus]

Hi ports@,

The GeoIP/GeoLite databases are now legacy [1], so this module is not
useful anymore. Nothing in the ports tree uses it.

Comments? OK to remove?

[1] 
https://blog.maxmind.com/2018/01/02/discontinuation-of-the-geolite-legacy-databases/