Remove unused Iterator.task_result_index_ (c78b289)

src/ifcgeom/Iterator.cpp

@@ -144,7 +144,6 @@ bool IfcGeom::Iterator::initialize() {
 
 		task_iterator_ = tasks_.begin();
 
-		task_result_index_ = 0;
 		done = 0;
 		total = (int)tasks_.size();
 

src/ifcgeom/Iterator.h

@@ -123,7 +123,6 @@ namespace IfcGeom {
 		std::mutex element_ready_mutex_;
 		bool task_result_ptr_initialized = false;
 		size_t async_elements_returned_ = 0;
-		size_t task_result_index_ = 0;
 		
 		ifcopenshell::geometry::Settings settings_;
 		IfcParse::IfcFile* ifc_file;