How can I automate the removal of PCB tracks for layout optimization using Python in KiCad?
Automating the removal of PCB tracks for layout optimization can be done using Python scripting in KiCad. The script provided shows how to quickly clear all tracks from the PCB, which is useful during layout optimization or troubleshooting:

```python
import pcbnew

board = pcbnew.GetBoard()
for t in board.GetTracks():
    board.Delete(t)

pcbnew.Refresh()
```

This method is effective for scenarios where the entire track layout needs to be revised or when starting over is more efficient than modifying the existing layout.