Do not report ERROR when sample rate equals 100

src/sql/dblink/ob_dblink_utils.cpp

@@ -30,19 +30,6 @@ using namespace oceanbase::sql;
 using namespace oceanbase::share;
 
 #ifdef OB_BUILD_DBLINK
-
-bool get_dblink_reuse_connection_cfg()
-{
-  omt::ObTenantConfigGuard tenant_config(TENANT_CONF(MTL_ID()));
-  // default value of _enable_dblink_reuse_connection is true, if !tenant_config.is_valid() return true
-  return tenant_config.is_valid() ? tenant_config->_enable_dblink_reuse_connection : true;
-}
-
-bool get_enable_dblink_cfg()
-{
-  return GCONF.enable_dblink;
-}
-
 uint64_t ObDblinkService::get_current_tenant_id()
 {
   return MTL_ID();