Revert "Improve speed of Map Matching" (#5196)

* Revert "Update changelog"

This reverts commit 9b779c704f.

* Revert "Fix formating"

This reverts commit 5bd7d04fe3.

* Revert "Fix bug in computation of distance offset for phantom node"

This reverts commit 0f78f7b2cc.

* Revert "Adjust text cases for flightly different matching due to rounding"

This reverts commit 8473be69d2.

* Revert "Round network distance to deci-meter to retain previous behavior"

This reverts commit c0124f7d77.

* Revert "Preserve heap state in map matching"

This reverts commit b630b4e32a.

* Revert "Use distance functions from many to many"

This reverts commit 89fabc1b9c.

* Revert "Use FCC algorithm for map matching distance calculation"

This reverts commit a649a8a5cf.

src/engine/routing_algorithms/map_matching.cpp

@@ -227,9 +227,6 @@ SubMatchingList mapMatching(SearchEngineData<Algorithm> &engine_working_data,
                 {
                     continue;
                 }
-                forward_heap.Clear();
-                const auto &source_phantom = prev_unbroken_timestamps_list[s].phantom_node;
-                insertSourceInHeap(forward_heap, source_phantom);
 
                 for (const auto s_prime : util::irange<std::size_t>(0UL, current_viterbi.size()))
                 {
@@ -240,19 +237,14 @@ SubMatchingList mapMatching(SearchEngineData<Algorithm> &engine_working_data,
                         continue;
                     }
 
-                    reverse_heap.Clear();
-                    const auto &target_phantom = current_timestamps_list[s_prime].phantom_node;
-                    insertTargetInHeap(reverse_heap, target_phantom);
-
-                    double network_distance = getNetworkDistance(engine_working_data,
-                                                                 facade,
-                                                                 forward_heap,
-                                                                 reverse_heap,
-                                                                 source_phantom,
-                                                                 target_phantom,
-                                                                 weight_upper_bound);
-
-                    network_distance = std::round(network_distance * 10) / 10;
+                    double network_distance =
+                        getNetworkDistance(engine_working_data,
+                                           facade,
+                                           forward_heap,
+                                           reverse_heap,
+                                           prev_unbroken_timestamps_list[s].phantom_node,
+                                           current_timestamps_list[s_prime].phantom_node,
+                                           weight_upper_bound);
 
                     // get distance diff between loc1/2 and locs/s_prime
                     const auto d_t = std::abs(network_distance - haversine_distance);