reverted default setting of --ndbcluster if --ndb-connectstring is given

mysql-test/mysql-test-run.sh

@@ -1451,9 +1451,9 @@ then
   then
     echo "Starting ndbcluster"
     ./ndb/ndbcluster --port-base=$NDBCLUSTER_PORT --small --diskless --initial --data-dir=$MYSQL_TEST_DIR/var || exit 1
-    USE_NDBCLUSTER="--ndb-connectstring=\"host=localhost:$NDBCLUSTER_PORT\""
+    USE_NDBCLUSTER="$USE_NDBCLUSTER --ndb-connectstring=\"host=localhost:$NDBCLUSTER_PORT\""
   else
-    USE_NDBCLUSTER="--ndb-connectstring=\"$USE_RUNNING_NDBCLUSTER\""
+    USE_NDBCLUSTER="$USE_NDBCLUSTER --ndb-connectstring=\"$USE_RUNNING_NDBCLUSTER\""
     echo "Using ndbcluster at $USE_NDBCLUSTER"
   fi
   fi

sql/mysqld.cc

@@ -6004,11 +6004,6 @@ get_one_option(int optid, const struct my_option *opt __attribute__((unused)),
       have_ndbcluster= SHOW_OPTION_DISABLED;
 #endif
     break;
-#ifdef HAVE_NDBCLUSTER_DB
-  case OPT_NDB_CONNECTSTRING:
-    have_ndbcluster= SHOW_OPTION_YES;
-    break;
-#endif
   case OPT_INNODB:
 #ifdef HAVE_INNOBASE_DB
     if (opt_innodb)