util: remove unused functions (#32372)

cleanup
old-commit-hash: c063395312

common/util.cc

@@ -246,12 +246,6 @@ std::string random_string(std::string::size_type length) {
   return s;
 }
 
-std::string dir_name(std::string const &path) {
-  size_t pos = path.find_last_of("/");
-  if (pos == std::string::npos) return "";
-  return path.substr(0, pos);
-}
-
 bool starts_with(const std::string &s1, const std::string &s2) {
   return strncmp(s1.c_str(), s2.c_str(), s2.size()) == 0;
 }
@@ -277,20 +271,4 @@ std::string check_output(const std::string& command) {
   return result;
 }
 
-struct tm get_time() {
-  time_t rawtime;
-  time(&rawtime);
-
-  struct tm sys_time;
-  gmtime_r(&rawtime, &sys_time);
-
-  return sys_time;
-}
-
-bool time_valid(struct tm sys_time) {
-  int year = 1900 + sys_time.tm_year;
-  int month = 1 + sys_time.tm_mon;
-  return (year > 2023) || (year == 2023 && month >= 6);
-}
-
 }  // namespace util

common/util.h

@@ -8,7 +8,6 @@
 #include <atomic>
 #include <chrono>
 #include <csignal>
-#include <ctime>
 #include <map>
 #include <memory>
 #include <mutex>
@@ -45,10 +44,6 @@ int set_realtime_priority(int level);
 int set_core_affinity(std::vector<int> cores);
 int set_file_descriptor_limit(uint64_t limit);
 
-// ***** Time helpers *****
-struct tm get_time();
-bool time_valid(struct tm sys_time);
-
 // ***** math helpers *****
 
 // map x from [a1, a2] to [b1, b2]
@@ -75,7 +70,6 @@ int getenv(const char* key, int default_val);
 float getenv(const char* key, float default_val);
 
 std::string hexdump(const uint8_t* in, const size_t size);
-std::string dir_name(std::string const& path);
 bool starts_with(const std::string &s1, const std::string &s2);
 bool ends_with(const std::string &s, const std::string &suffix);