Don't scan+apply every setOldestVersion call

Bench.cpp

@@ -3,11 +3,11 @@
 #include <nanobench.h>
 
 void monotonicallyIncreasing() {
-  constexpr int kWindow = 100;
+  constexpr int kWindow = 1000;
   ankerl::nanobench::Bench bench;
   Facade facade{0};
 
-  bench.minEpochIterations(1000);
+  bench.minEpochIterations(kWindow * 10);
 
   bench.warmup(kWindow).run("monotonically increasing", [&] {
     const int64_t remove = __builtin_bswap64(facade.getVersion() - kWindow);
@@ -29,18 +29,6 @@ void monotonicallyIncreasing() {
   const auto end = facade.versioned.end(v);
   auto iter = begin;
 
-  bench.run("scan", [&] {
-    for (iter = begin; iter != end; ++iter) {
-    }
-  });
-
-  bench.run("reverse scan", [&] {
-    iter = end;
-    do {
-      --iter;
-    } while (iter != begin);
-  });
-
   bench.run("deref", [&] { bench.doNotOptimizeAway(*iter); });
 
   iter = begin;