[cta_admin] Removes superflous endl from output

cmdline/CtaAdminCmd.cpp

@@ -139,7 +139,7 @@ void CtaAdminCmd::send() const
    {
       using namespace cta::xrd;
 
-      case Response::RSP_SUCCESS:         std::cout << response.message_txt() << std::endl; break;
+      case Response::RSP_SUCCESS:         std::cout << response.message_txt(); break;
       case Response::RSP_ERR_PROTOBUF:    throw XrdSsiPb::PbException(response.message_txt());
       case Response::RSP_ERR_CTA:         throw std::runtime_error(response.message_txt());
       default:                            throw XrdSsiPb::PbException("Invalid response type.");