erp5_decision: Remove portal roles

bt5/erp5_decision/PortalTypeRolesTemplateItem/Decision%20Line.xml

-<type_roles>
-</type_roles>
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bt5/erp5_decision/PortalTypeRolesTemplateItem/Decision%20Module.xml

-<type_roles>
-  <role id='Author; Auditor'>
-   <property id='title'>Default</property>
-   <multi_property id='category'>group/my_group</multi_property>
-  </role>
-</type_roles>
\ No newline at end of file

bt5/erp5_decision/PortalTypeRolesTemplateItem/Decision.xml

-<type_roles>
-  <role id='Assignor; Assignee; Associate; Auditor; Author'>
-   <property id='title'>Default</property>
-   <multi_property id='category'>group/my_group</multi_property>
-  </role>
-</type_roles>
\ No newline at end of file

bt5/erp5_decision/bt/template_portal_type_role_list

-Decision
-Decision Line
-Decision Module
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