No free wiring in log walls

[sparr]

Summary

Content "No free wiring in log walls"

Purpose of change

I suspect this flag was added because existing log cabins are expected to have power outlets and light fixtures and such. However, a side effect is that players can build log walls and get free wiring from them.

Describe the solution

Removed the WIRED_WALL flag from t_wall_log

Describe alternatives you've considered

We could add a new log wall type used by existing modern log cabins that includes wiring, and let the player build the kind where they have to add wiring.

Testing

Tried to reveal wall wiring on a log wall.

Additional context

This is the only player-constructable wall that has magical free wiring.