[point_order] Cleanup, comment. Remove unneeded ctor. Remove empty namespace.

Author: awulkiew

include/boost/geometry/algorithms/detail/calculate_point_order.hpp

@@ -26,13 +26,6 @@
 namespace boost { namespace geometry
 {
 
-namespace strategy { namespace order
-{
-
-
-
-}} // namespace strategy::order
-
 namespace detail
 {
 
@@ -44,11 +37,6 @@ struct clean_point
         , m_is_azi_valid(false), m_is_azi_diff_valid(false)
     {}
 
-    clean_point(Iter const& iter, CalcT const& azi, CalcT const& azi_diff)
-        : m_iter(iter), m_azi(azi), m_razi(0), m_azi_diff(azi_diff)
-        , m_is_azi_valid(true), m_is_azi_diff_valid(false)
-    {}
-
     typename boost::iterators::iterator_reference<Iter>::type ref() const
     {
         return *m_iter;
@@ -107,6 +95,8 @@ struct clean_point
     CalcT m_azi;
     CalcT m_razi;
     CalcT m_azi_diff;
+    // NOTE: these flags could be removed and replaced with some magic number
+    //       assigned to the above variables, e.g. CalcT(1000).
     bool m_is_azi_valid;
     bool m_is_azi_diff_valid;
 };