MDEV-28894 Spider: remove #ifdef HA_EXTRA_HAS_STARTING_ORDERED_INDEX_SCAN

HA_EXTRA_STARTING_ORDERED_INDEX_SCAN was added latest 2018:
921c5e93

storage/spider/ha_spider.cc

@@ -1436,10 +1436,7 @@ int ha_spider::extra(
       if (!(wide_handler->trx = spider_get_trx(ha_thd(), TRUE, &error_num)))
         DBUG_RETURN(error_num);
       break;
-#if defined(HA_EXTRA_HAS_STARTING_ORDERED_INDEX_SCAN) || defined(HA_EXTRA_HAS_HA_EXTRA_USE_CMP_REF)
-#ifdef HA_EXTRA_HAS_STARTING_ORDERED_INDEX_SCAN
     case HA_EXTRA_STARTING_ORDERED_INDEX_SCAN:
-#endif
 #ifdef HA_EXTRA_HAS_HA_EXTRA_USE_CMP_REF
     case HA_EXTRA_USE_CMP_REF:
 #endif
@@ -1470,7 +1467,6 @@ int ha_spider::extra(
         }
       }
       break;
-#endif
     default:
       break;
   }

storage/spider/spd_environ.h

@@ -28,7 +28,6 @@
 #define HANDLER_HAS_DIRECT_UPDATE_ROWS
 #define HANDLER_HAS_DIRECT_AGGREGATE
 #define PARTITION_HAS_GET_PART_SPEC
-#define HA_EXTRA_HAS_STARTING_ORDERED_INDEX_SCAN
 #define HANDLER_HAS_NEED_INFO_FOR_AUTO_INC
 #define HANDLER_HAS_CAN_USE_FOR_AUTO_INC_INIT