minor: remove an unused parameter

Author: acmorrow

examples/mongocxx/instance_management.cpp

@@ -75,7 +75,7 @@ void configure(mongocxx::uri uri) {
  class noop_logger : public mongocxx::logger {
  public:
  virtual void operator()(mongocxx::log_level, mongocxx::stdx::string_view,
- mongocxx::stdx::string_view message) noexcept {}
+ mongocxx::stdx::string_view) noexcept {}
  };
 
  mongo_access::instance().configure(