cleanup: #ifdef DELETE_ITEMS removed

sql/item.cc:
  #ifdef DELETE_ITEMS removed
sql/item_cmpfunc.cc:
  #ifdef DELETE_ITEMS removed
sql/sql_parse.cc:
  #ifdef DELETE_ITEMS removed
sql/sql_select.cc:
  #ifdef DELETE_ITEMS removed

sql/item.cc

@@ -1779,17 +1779,9 @@ Item *resolve_const_item(Item *item,Item *comp_item)
     String tmp(buff,sizeof(buff),&my_charset_bin),*result;
     result=item->val_str(&tmp);
     if (item->null_value)
-    {
-#ifdef DELETE_ITEMS
-      delete item;
-#endif
       return new Item_null(name);
-    }
     uint length=result->length();
     char *tmp_str=sql_strmake(result->ptr(),length);
-#ifdef DELETE_ITEMS
-    delete item;
-#endif
     return new Item_string(name,tmp_str,length,result->charset());
   }
   if (res_type == INT_RESULT)
@@ -1797,9 +1789,6 @@ Item *resolve_const_item(Item *item,Item *comp_item)
     longlong result=item->val_int();
     uint length=item->max_length;
     bool null_value=item->null_value;
-#ifdef DELETE_ITEMS
-    delete item;
-#endif
     return (null_value ? (Item*) new Item_null(name) :
 	    (Item*) new Item_int(name,result,length));
   }
@@ -1808,9 +1797,6 @@ Item *resolve_const_item(Item *item,Item *comp_item)
     double result=item->val();
     uint length=item->max_length,decimals=item->decimals;
     bool null_value=item->null_value;
-#ifdef DELETE_ITEMS
-    delete item;
-#endif
     return (null_value ? (Item*) new Item_null(name) :
 	    (Item*) new Item_real(name,result,decimals,length));
   }

sql/item_cmpfunc.cc

@@ -1703,9 +1703,6 @@ Item_cond::fix_fields(THD *thd, TABLE_LIST *tables, Item **ref)
     {						// Identical function
       li.replace(((Item_cond*) item)->list);
       ((Item_cond*) item)->list.empty();
-#ifdef DELETE_ITEMS
-      delete (Item_cond*) item;
-#endif
       item= *li.ref();				// new current item
     }
     if (abort_on_null)

sql/sql_parse.cc

@@ -1899,10 +1899,6 @@ mysql_execute_command(THD *thd)
 	  if (!(result=new select_send()))
 	  {
 	    res= -1;
-#ifdef DELETE_ITEMS
-	    delete select_lex->having;
-	    delete select_lex->where;
-#endif
 	    break;
 	  }
 	}

sql/sql_select.cc

@@ -4395,17 +4395,9 @@ remove_eq_conds(COND *cond,Item::cond_result *cond_value)
     {
       Item *new_item=remove_eq_conds(item,&tmp_cond_value);
       if (!new_item)
-      {
-#ifdef DELETE_ITEMS
-	delete item;				// This may be shared
-#endif
 	li.remove();
-      }
       else if (item != new_item)
       {
-#ifdef DELETE_ITEMS
-	delete item;				// This may be shared
-#endif
 	VOID(li.replace(new_item));
 	should_fix_fields=1;
       }