diff --git a/src/glog/logging.h b/src/glog/logging.h
index b69fc506e..c4614769c 100644
--- a/src/glog/logging.h
+++ b/src/glog/logging.h
@@ -1692,11 +1692,6 @@ GLOG_EXPORT bool SendEmail(const char* dest, const char* subject,
 
 GLOG_EXPORT const std::vector<std::string>& GetLoggingDirectories();
 
-// For tests only:  Clear the internal [cached] list of logging directories to
-// force a refresh the next time GetLoggingDirectories is called.
-// Thread-hostile.
-void TestOnly_ClearLoggingDirectoriesList();
-
 // Returns a set of existing temporary directories, which will be a
 // subset of the directories returned by GetLoggingDirectories().
 // Thread-safe.
diff --git a/src/logging.cc b/src/logging.cc
index 4607402b2..b4c736163 100644
--- a/src/logging.cc
+++ b/src/logging.cc
@@ -2401,14 +2401,6 @@ const vector<string>& GetLoggingDirectories() {
   return *logging_directories_list;
 }
 
-void TestOnly_ClearLoggingDirectoriesList() {
-  fprintf(stderr,
-          "TestOnly_ClearLoggingDirectoriesList should only be "
-          "called from test code.\n");
-  delete logging_directories_list;
-  logging_directories_list = nullptr;
-}
-
 void GetExistingTempDirectories(vector<string>* list) {
   GetTempDirectories(list);
   auto i_dir = list->begin();