Remove now obsolete "segment" attribute in tile objects in tilegrid
Remove now obsolete "segment" attribute in tile objects in tilegrid

Signed-off-by: Clifford Wolf <b28e7ff75903c06de987a1eb75ea100a79c89e3a@clifford.at>

SymbiFlow/prjxray,SymbiFlow/prjxray,SymbiFlow/prjxray,SymbiFlow/prjxray,SymbiFlow/prjxray