This reverts commit 23249e9eec85350e7464eac3ec90450b2614e3c7. reverts https://github.com/piwik/piwik/pull/12021
We can't use geoip from composer as it conflicts with geoip pecl and there is no way to work around it.
The patched library we used before checked if those methods already exist before defining them...
As this is a simple revert, I'll merge without review