trade: make child_resource_uid related key faster.

bt5/erp5_trade/CatalogMethodTemplateItem/portal_catalog/erp5_mysql_innodb/z_related_child_resource.sql

 <dtml-var table_0>.uid = <dtml-var table_1>.uid
 <dtml-var RELATED_QUERY_SEPARATOR>
-<dtml-var table_2>.uid = <dtml-var table_1>.category_uid
-<dtml-var RELATED_QUERY_SEPARATOR>
 <dtml-var table_1>.base_category_uid = <dtml-var "portal_categories.resource.getUid()">
 AND <dtml-var table_0>.uid = <dtml-var table_1>.uid
 AND <dtml-var table_0>.parent_uid = <dtml-var query_table>.uid
\ No newline at end of file

bt5/erp5_trade/CatalogMethodTemplateItem/portal_catalog/erp5_mysql_innodb/z_related_child_resource.xml

@@ -10,7 +10,6 @@
             <key> <string>arguments_src</string> </key>
             <value> <string>table_0\r\n
 table_1\r\n
-table_2\r\n
 RELATED_QUERY_SEPARATOR=" AND "\r\n
 query_table="catalog"</string> </value>
         </item>

bt5/erp5_trade/CatalogRelatedKeyTemplateItem/related_key_list.xml

 <key_list>
- <key>child_resource_uid | catalog,category,catalog/uid/z_related_child_resource</key>
+ <key>child_resource_uid | catalog,category/category_uid/z_related_child_resource</key>
 </key_list>
\ No newline at end of file

bt5/erp5_trade/bt/template_catalog_related_key_list

-child_resource_uid | catalog,category,catalog/uid/z_related_child_resource
\ No newline at end of file
+child_resource_uid | catalog,category/category_uid/z_related_child_resource
\ No newline at end of file