* sink wires, we must have a full routing map in place.
*/
protected void removeDuplicateTileSinks(WireEnumerator we){
for(int i=0; i < this.rows; i++){
for(int j=0; j < this.columns; j++){
tiles[i][j].setSinks(tileSinksPool.add(new TileSinks(tiles[i][j].getSinks())).sinks);
}
}
}