Only one test executable is using benchmark, and that is only for a badly
placed benchmark.

--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -323,7 +323,7 @@ if(LEVELDB_BUILD_TESTS)

         "${test_file}"
     )
-    target_link_libraries("${test_target_name}" leveldb gmock gtest benchmark)
+    target_link_libraries("${test_target_name}" leveldb gmock gtest)
     target_compile_definitions("${test_target_name}"
       PRIVATE
         ${LEVELDB_PLATFORM_NAME}=1
--- a/db/db_test.cc
+++ b/db/db_test.cc
@@ -9,7 +9,6 @@
 #include <string>

 #include "gtest/gtest.h"
-#include "benchmark/benchmark.h"
 #include "db/db_impl.h"
 #include "db/filename.h"
 #include "db/version_set.h"
@@ -2301,6 +2300,7 @@ std::string MakeKey(unsigned int num) {
   return std::string(buf);
 }

+#if 0
 static void BM_LogAndApply(benchmark::State& state) {
   const int num_base_files = state.range(0);
 
@@ -2357,10 +2357,10 @@ static void BM_LogAndApply(benchmark::State& state) {
 }

 BENCHMARK(BM_LogAndApply)->Arg(1)->Arg(100)->Arg(10000)->Arg(100000);
+#endif
 }  // namespace leveldb

 int main(int argc, char** argv) {
   testing::InitGoogleTest(&argc, argv);
-  benchmark::RunSpecifiedBenchmarks();
   return RUN_ALL_TESTS();
 }