fix invalid condition (#256)

common/lanelet2_extension/lib/CarmaTrafficSignal.cpp

@@ -119,11 +119,6 @@ boost::optional<std::pair<boost::posix_time::ptime, CarmaTrafficSignalState>> Ca
     LOG_WARN_STREAM("CarmaTrafficSignal doesn't have any recorded states of traffic lights");
     return boost::none;
   }
-
-  if (recorded_time_stamps.size() == 1) // if only 1 timestamp recorded, this signal doesn't change
-  {
-    return std::pair<boost::posix_time::ptime, CarmaTrafficSignalState>(recorded_time_stamps.front().first, recorded_time_stamps.front().second);
-  }
 
   if (lanelet::time::toSec(fixed_cycle_duration) < 1.0) // there are recorded states, but no fixed_cycle_duration means it is dynamic
   {
@@ -156,6 +151,7 @@ boost::optional<std::pair<boost::posix_time::ptime, CarmaTrafficSignalState>> Ca
     }
   }
 
+  // This part of the code is used for predicting state if fixed_cycle_duration is set using setStates function
   // shift starting time to the future or to the past to fit input into a valid cycle
   boost::posix_time::time_duration accumulated_offset_duration;
   double offset_duration_dir = recorded_time_stamps.front().first > time_stamp ? -1.0 : 1.0; // -1 if past, +1 if time_stamp is in future