Clean up geometric and linear coordinates in linearLocation

Background

There are two paths for geometric and linear coordinates in a <linearLocation>:

(1) Using the <geometricCoordinateBegin> and <geometricCoordinateEnd> or <linearCoordinateBegin> and <linearCoordinateEnd> of an <associatedNetElement>. This leaves no ambiguity.

(2) Using the subelements <geometricCoordinate> and <linearCoordinate> directly under <linearLocation>. It is unclear how these should be interpreted, if present, and this does not seem to offer anything that (1) does not.

Suggestion

remove the subelements <geometricCoordinate> and <linearCoordinate> directly from <linearLocation> (similarly to <areaLocation>).

Edited by CO Onto