Bug#35731994 too verbose error message if acceptor setup fails

When binding to the sockets fails at startup, router reports:

  start routing failed: Failed setting up acceptor services:
  Failed setting up acceptor on '/tmp/router-OOYarI/sockfile':
  Invalid argument

which mentions "failed" 3 times.

Change
======

- removed "Failed setting up acceptor services" from the error-msg.

Change-Id: Ica47d48dac28bac64bf29f3b5b15726ca9e11681

Author: weigon

router/src/routing/src/mysql_routing.cc

@@ -712,8 +712,8 @@ void MySQLRouting::run(mysql_harness::PluginFuncEnv *env) {
     auto res = run_acceptor(env);
     if (!res) {
       clear_running(env);
-      throw std::runtime_error(string_format(
-          "Failed setting up acceptor services: %s", res.error().c_str()));
+
+      throw std::runtime_error(res.error());
     }
   }
 }

router/tests/component/test_router_configuration_errors.cc

@@ -438,8 +438,8 @@ static const BrokenConfigParams broken_config_params_unix[]{
                  {"socket", "/this/path/does/not/exist/socket"},
              }),
      },
-     "Failed setting up acceptor services: Failed setting up acceptor on "
-     "'/this/path/does/not/exist/socket': No such file or directory",
+     "Failed setting up acceptor on '/this/path/does/not/exist/socket': "
+     "No such file or directory",
      ""},
 };