Remove utils::hasKey(), as we now have .contains()

authenticator.cpp

@@ -21,7 +21,7 @@ Authenticator::Authenticator(UserDao &userDao)
 // TODO: make failure counter configurable
 bool Authenticator::isBanned(std::string ip)
 {
-	if(utils::hasKey(loginFails, ip))
+	if(loginFails.contains(ip))
 	{
 		LoginFail &fl = loginFails[ip];
 		std::lock_guard<std::mutex> lock(fl.mutex);