erp5_immobilisation: Drop trivial related key declaration.

aggregate_uid can be auto-generated with one less join, and chosen
ZSQLMethod name gets in the way of auto-generated related key
(default_aggregate_uid and the like).

bt5/erp5_immobilisation/CatalogMethodTemplateItem/portal_catalog/erp5_mysql_innodb/z_related_aggregate.catalog_keys.xml

-<catalog_method>
-</catalog_method>

bt5/erp5_immobilisation/CatalogMethodTemplateItem/portal_catalog/erp5_mysql_innodb/z_related_aggregate.sql

-<dtml-var table_1>.uid = <dtml-var table_0>.category_uid
-AND <dtml-var table_0>.base_category_uid = <dtml-var "portal_categories.aggregate.getUid()">
-AND <dtml-var table_0>.uid = catalog.uid

bt5/erp5_immobilisation/CatalogMethodTemplateItem/portal_catalog/erp5_mysql_innodb/z_related_aggregate.xml

-<?xml version="1.0"?>
-<ZopeData>
-  <record id="1" aka="AAAAAAAAAAE=">
-    <pickle>
-      <global name="SQL" module="Products.ZSQLMethods.SQL"/>
-    </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</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_aggregate</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>title</string> </key>
-            <value> <string></string> </value>
-        </item>
-      </dictionary>
-    </pickle>
-  </record>
-</ZopeData>

bt5/erp5_immobilisation/CatalogRelatedKeyTemplateItem/related_key_list.xml

 <key_list>
- <key>aggregate_uid | category,catalog/uid/z_related_aggregate</key>
  <key>translated_immobilisation_state_title | translation/translated_message/z_related_translated_immobilisation_state_title</key>
 </key_list>
\ No newline at end of file

bt5/erp5_immobilisation/bt/template_catalog_method_id_list

-erp5_mysql_innodb/z_related_aggregate
 erp5_mysql_innodb/z_related_translated_immobilisation_state_title
\ No newline at end of file

bt5/erp5_immobilisation/bt/template_catalog_related_key_list

-aggregate_uid | category,catalog/uid/z_related_aggregate
 translated_immobilisation_state_title | translation/translated_message/z_related_translated_immobilisation_state_title
\ No newline at end of file