Revert "Refactoring of parse_way_tags function"
Revert "Refactoring of parse_way_tags function"

This reverts commit d50d01760ddf6b4731d50e0fdde891162334d8ad.

Tisseo/navitia,xlqian/navitia,CanalTP/navitia,CanalTP/navitia,CanalTP/navitia,Tisseo/navitia,xlqian/navitia,xlqian/navitia,xlqian/navitia,Tisseo/navitia,Tisseo/navitia,Tisseo/navitia,CanalTP/navitia,xlqian/navitia,CanalTP/navitia