slapos_erp5: project member only need Auditor role on it

master/bt5/slapos_erp5/PortalTypeRolesTemplateItem/Project.xml

 <type_roles>
-  <role id='Assignor'>
-   <property id='title'>Group company</property>
-   <multi_property id='categories'>local_role_group/group</multi_property>
-   <multi_property id='category'>group/company</multi_property>
-   <multi_property id='base_category'>group</multi_property>
-  </role>
-  <role id='Assignee'>
-   <property id='title'>Person Owner</property>
-   <property id='base_category_script'>ERP5Type_getSecurityCategoryFromContent</property>
-   <multi_property id='categories'>local_role_group/user</multi_property>
-   <multi_property id='base_category'>destination_decision</multi_property>
-  </role>
   <role id='Auditor'>
-   <property id='title'>Person Shadow</property>
-   <multi_property id='categories'>local_role_group/shadow</multi_property>
-   <multi_property id='category'>role/shadow/person</multi_property>
-   <multi_property id='base_category'>role</multi_property>
-  </role>
-  <role id='Assignee'>
    <property id='title'>Project Member</property>
    <property id='base_category_script'>ERP5Type_getSecurityCategoryFromSelf</property>
    <multi_property id='categories'>local_role_group/project</multi_property>