Revert suppressSegregated routing.

include/engine/guidance/collapse_turns.hpp

@@ -140,8 +140,6 @@ void combineRouteSteps(RouteStep &step_at_turn_location,
 // alias for suppressing a step, using CombineRouteStep with NoModificationStrategy only
 void suppressStep(RouteStep &step_at_turn_location, RouteStep &step_after_turn_location);
 
-std::vector<RouteStep> suppressSegregated(std::vector<RouteStep> steps);
-
 } /* namespace guidance */
 } /* namespace osrm */
 } /* namespace osrm */

include/engine/guidance/route_step.hpp

@@ -165,7 +165,7 @@ inline RouteStep &RouteStep::ElongateBy(const RouteStep &following_step)
                          following_step.intersections.begin(),
                          following_step.intersections.end());
 
-    is_segregated = false;
+    /// @todo Process is_segregated flag
 
     return *this;
 }