Migrate to modern TBB version

unit_tests/partitioner/recursive_bisection.cpp

@@ -7,9 +7,6 @@
 
 #include <boost/test/unit_test.hpp>
 
-// make sure not to leak in recursive bisection
-#include <tbb/global_control.h>
-tbb::global_control scheduler(tbb::global_control::max_allowed_parallelism, 2);
 
 using namespace osrm::partitioner;
 using namespace osrm::util;

unit_tests/util/static_rtree.cpp

@@ -24,10 +24,6 @@
 #include <utility>
 #include <vector>
 
-// explicit TBB scheduler init to register resources cleanup at exit
-#include <tbb/global_control.h>
-tbb::global_control scheduler(tbb::global_control::max_allowed_parallelism, 2);
-
 BOOST_AUTO_TEST_SUITE(static_rtree)
 
 using namespace osrm;