remove unused state_ field (backport #215) (#218)

Author: mergify[bot]

include/realtime_tools/realtime_server_goal_handle.h

@@ -47,8 +47,6 @@ class RealtimeServerGoalHandle
   using ResultSharedPtr = typename Action::Result::SharedPtr;
   using FeedbackSharedPtr = typename Action::Feedback::SharedPtr;
 
-  uint8_t state_;
-
   bool req_abort_;
   bool req_cancel_;
   bool req_succeed_;