whole_func_string: function deleteFile(name, callback) {
    fs.unlink(path.join(LOG_DIR, name), callback);
  }
func_code_string: function deleteFile(name, callback) {
    fs.unlink(path.join(LOG_DIR, name), callback);
  }
func_documentation_string: Delete a log file with the given name
  @param  {String}   name
  @param  {Function} callback