fix formatter bench

bench/formatter-bench.cpp

@@ -8,19 +8,6 @@
 #include "spdlog/spdlog.h"
 #include "spdlog/details/pattern_formatter.h"
 
-void bench_scoped_pad(benchmark::State &state, size_t wrapped_size, spdlog::details::padding_info padinfo)
-{
-    fmt::memory_buffer dest;
-    for (auto _ : state)
-    {
-        {
-            spdlog::details::scoped_pad p(wrapped_size, padinfo, dest);
-            benchmark::DoNotOptimize(p);
-            dest.clear();
-        }
-    }
-}
-
 void bench_formatter(benchmark::State &state, std::string pattern)
 {
     auto formatter = spdlog::details::make_unique<spdlog::pattern_formatter>(pattern);