bench: clean up includes

Drops unneeded and adds missing includes

src/bench/bech32.cpp

@@ -3,7 +3,6 @@
 // file COPYING or http://www.opensource.org/licenses/mit-license.php.
 
 #include <bench/bench.h>
-#include <bench/nanobench.h>
 
 #include <bech32.h>
 #include <util/strencodings.h>

src/bench/bench.cpp

@@ -4,11 +4,18 @@
 
 #include <bench/bench.h>
 
-#include <chainparams.h>
 #include <test/util/setup_common.h>
-#include <validation.h>
 
+#include <chrono>
+#include <fstream>
+#include <functional>
+#include <iostream>
+#include <map>
 #include <regex>
+#include <string>
+#include <vector>
+
+using namespace std::chrono_literals;
 
 const std::function<void(const std::string&)> G_TEST_LOG_FUN{};
 

src/bench/bench_bitcoin.cpp

@@ -9,7 +9,11 @@
 #include <util/strencodings.h>
 #include <util/system.h>
 
-#include <memory>
+#include <chrono>
+#include <cstdint>
+#include <iostream>
+#include <sstream>
+#include <vector>
 
 static const char* DEFAULT_BENCH_FILTER = ".*";
 static constexpr int64_t DEFAULT_MIN_TIME_MS{10};