Update/remove "Move close to latitude and longitude" example

[erictheise]

The Move close to latitude and longitude example makes use of moveCloseTo() which has been removed. The corresponding example, too, should be removed or, better, updated to reflect the new way of working.

[oscarlorentzon]

You are correct, the example should be removed.

From v3.0 it is required to use the search images REST API for close to functionality. Based on the result one can move to an image key of choice in MapillaryJS.