Remove files that are not used

src/common/file_util.h

@@ -125,6 +125,8 @@ bool SetCurrentDir(const std::string& directory);
 // directory. To be used in "multi-user" mode (that is, installed).
 const std::string& GetUserPath(UserPath path, const std::string& new_path = "");
 
+std::string GetHactoolConfigurationPath();
+
 // Returns the path to where the sys file are
 std::string GetSysDirectory();