Revert "[tracks] Fixed ending points."

This reverts commit 64f50d4e49.

libs/map/gps_track_collection.cpp

@@ -2,6 +2,8 @@
 
 #include "base/assert.hpp"
 
+#include <algorithm>
+
 namespace
 {
 
@@ -25,6 +27,8 @@ private:
 
 }  // namespace
 
+size_t const GpsTrackCollection::kInvalidId = std::numeric_limits<size_t>::max();
+
 GpsTrackCollection::GpsTrackCollection() : m_lastId(0), m_elevationInfoDirty(true) {}
 
 std::pair<size_t, size_t> GpsTrackCollection::Add(std::vector<TItem> const & items)