CentralNotice: Re-set $wgCentralGeoScriptURL to false

Enabling the use of GeoIP cookie, deployed to production two hours ago.

This reverts commit 2485cdfaeb29e1c2cb8548d6c2bef7ce5c228579.

Change-Id: I42e9c8c976f5311867609006f568283f807b03f5
Merge "CentralNotice: Re-set $wgCentralGeoScriptURL to false"