remove assert()

we_changed_our_state can accept the state we are in right now, so this
assert no longer is correct.

llarp/linux/sd_service_manager.cpp

@@ -17,7 +17,6 @@ namespace llarp::sys
     void
     we_changed_our_state(ServiceState st) override
     {
-      assert(m_State != st);
       m_State = st;
       report_changed_state();
     }