Silence unused variable warnings

plugins/match.hpp

@@ -78,6 +78,8 @@ template <class DataFacadeT> class MapMatchingPlugin : public BasePlugin
     TraceClassification
     classify(const float trace_length, const float matched_length, const int removed_points) const
     {
+        (void)removed_points; // unused
+
         const double distance_feature = -std::log(trace_length) + std::log(matched_length);
 
         // matched to the same point

plugins/timestamp.hpp

@@ -47,6 +47,8 @@ template <class DataFacadeT> class TimestampPlugin final : public BasePlugin
     int HandleRequest(const RouteParameters &route_parameters,
                       osrm::json::Object &json_result) override final
     {
+        (void)route_parameters; // unused
+
         json_result.values["status"] = 0;
         const std::string timestamp = facade->GetTimestamp();
         json_result.values["timestamp"] = timestamp;