scripted-diff: Remove priority_level from BENCHMARK macro

-BEGIN VERIFY SCRIPT-

 sed --in-place --regexp-extended 's/BENCHMARK\(([^,]+), benchmark::PriorityLevel::(HIGH|LOW)\)/BENCHMARK(\1)/g' $( git grep -l PriorityLevel )
 sed --in-place                   's/#define BENCHMARK(n, priority_level)/#define BENCHMARK(n)/g'                ./src/bench/bench.h

-END VERIFY SCRIPT-

src/bench/pool.cpp

@@ -49,5 +49,5 @@ static void PoolAllocator_StdUnorderedMapWithPoolResource(benchmark::Bench& benc
     BenchFillClearMap(bench, map);
 }
 
-BENCHMARK(PoolAllocator_StdUnorderedMap, benchmark::PriorityLevel::HIGH);
-BENCHMARK(PoolAllocator_StdUnorderedMapWithPoolResource, benchmark::PriorityLevel::HIGH);
+BENCHMARK(PoolAllocator_StdUnorderedMap);
+BENCHMARK(PoolAllocator_StdUnorderedMapWithPoolResource);