slapos_accounting: Remove unused related key

    It was used on OrderBuilder_generateUnrelatedInvoiceList but the code dont relies on it anymore.

master/bt5/slapos_accounting/CatalogMethodTemplateItem/portal_catalog/erp5_mysql_innodb/z_related_causality_payment_transaction.catalog_keys.xml

-<catalog_method>
-</catalog_method>

master/bt5/slapos_accounting/CatalogMethodTemplateItem/portal_catalog/erp5_mysql_innodb/z_related_causality_payment_transaction.sql

-<dtml-var table_0>.base_category_uid = <dtml-var "portal_categories.causality.getUid()">
-AND <dtml-var table_1>.uid = <dtml-var table_0>.uid
-AND <dtml-var table_1>.portal_type = 'Payment Transaction'
-AND <dtml-var table_1>.simulation_state not in ('deleted', 'cancelled')
-
-<dtml-var RELATED_QUERY_SEPARATOR>
-<dtml-var table_0>.category_uid = <dtml-var query_table>.uid
-

master/bt5/slapos_accounting/CatalogMethodTemplateItem/portal_catalog/erp5_mysql_innodb/z_related_causality_payment_transaction.xml

-<?xml version="1.0"?>
-<ZopeData>
-  <record id="1" aka="AAAAAAAAAAE=">
-    <pickle>
-      <global name="SQL Method" module="erp5.portal_type"/>
-    </pickle>
-    <pickle>
-      <dictionary>
-        <item>
-            <key> <string>allow_simple_one_argument_traversal</string> </key>
-            <value>
-              <none/>
-            </value>
-        </item>
-        <item>
-            <key> <string>arguments_src</string> </key>
-            <value> <string>table_0\r\n
-table_1\r\n
-RELATED_QUERY_SEPARATOR=" AND "\r\n
-query_table="catalog"</string> </value>
-        </item>
-        <item>
-            <key> <string>cache_time_</string> </key>
-            <value> <int>0</int> </value>
-        </item>
-        <item>
-            <key> <string>class_file_</string> </key>
-            <value> <string></string> </value>
-        </item>
-        <item>
-            <key> <string>class_name_</string> </key>
-            <value> <string></string> </value>
-        </item>
-        <item>
-            <key> <string>connection_hook</string> </key>
-            <value>
-              <none/>
-            </value>
-        </item>
-        <item>
-            <key> <string>connection_id</string> </key>
-            <value> <string>erp5_sql_connection</string> </value>
-        </item>
-        <item>
-            <key> <string>id</string> </key>
-            <value> <string>z_related_causality_payment_transaction</string> </value>
-        </item>
-        <item>
-            <key> <string>max_cache_</string> </key>
-            <value> <int>100</int> </value>
-        </item>
-        <item>
-            <key> <string>max_rows_</string> </key>
-            <value> <int>0</int> </value>
-        </item>
-        <item>
-            <key> <string>portal_type</string> </key>
-            <value> <string>SQL Method</string> </value>
-        </item>
-        <item>
-            <key> <string>title</string> </key>
-            <value> <string></string> </value>
-        </item>
-      </dictionary>
-    </pickle>
-  </record>
-</ZopeData>

master/bt5/slapos_accounting/CatalogRelatedKeyTemplateItem/related_key_list.xml

 <key_list>
- <key>causality_payment_transaction_related_uid | category,catalog/uid/z_related_causality_payment_transaction</key>
  <key>children_portal_type | catalog/portal_type/z_related_children</key>
  <key>parent_specialise_uid | category,catalog/uid/z_related_parent_specialise</key>
 </key_list>
\ No newline at end of file

master/bt5/slapos_accounting/bt/template_catalog_method_id_list

-erp5_mysql_innodb/z_related_causality_payment_transaction
\ No newline at end of file

master/bt5/slapos_accounting/bt/template_catalog_related_key_list

 children_portal_type | catalog/portal_type/z_related_children
-causality_payment_transaction_related_uid | category,catalog/uid/z_related_causality_payment_transaction
 parent_specialise_uid | category,catalog/uid/z_related_parent_specialise
\ No newline at end of file