Stop cutting the forward scan short at an occupied track.

The check added to TableTraceRoute() decided consist membership through
BelongsToConsist(), which falls back on TDynamicObject::is_connected() and its
Next()/Prev() walk - the same pair that mishandles reversed members. When it
failed to recognise one of our own cars the scan ended on our own consist, no
signal ever reached the speed table, and the driver stood at a clear semaphore
for good. Seen on a shunting locomotive that had just uncoupled, with ctOwner
still cleared.

The signal-permission code does not need it: OtherConsistAtSignal() looks the
route over on its own and DistanceToAnotherConsist() measures to the vehicle
rather than to the end of a track. Both stay.

vehicle/Driver.cpp

@@ -744,16 +744,6 @@ void TController::TableTraceRoute(double fDistance, TDynamicObject *pVehicle)
             }
         }
 
-        auto const distancetotrackend{ fCurrentDistance + fTrackLength };
-        // sign of the distance encodes the scanning direction (fLastDir < 0 = towards Point2)
-        if( distancetotrackend > 0.0 // the track still reaches ahead of us
-         && IsOccupiedByAnotherConsist( pTrack, distancetotrackend * ( fLastDir < 0.0 ? 1.0 : -1.0 ) ) ) {
-            // another consist stands here: it owns the signals beyond it, so we scan no further. The track
-            // stays in the table, marked checked - scanning resumes from the last entry, no dup control
-            tLast = pTrack;
-            break;
-        }
-
         fCurrentDistance += fTrackLength; // doliczenie kolejnego odcinka do przeskanowanej długości
         tLast = pTrack; // odhaczenie, że sprawdzony
         fLastVel = pTrack->VelocityGet(); // prędkość na poprzednio sprawdzonym odcinku