erp5_officejs_support_request_ui: Remove redundant query in these two python script.

bt5/erp5_officejs_support_request_ui/SkinTemplateItem/portal_skins/erp5_officejs_support_request/SupportRequest_getLastPostContent.py

 portal = context.getPortalObject()
 
-# get the related Support Request, this should not be None
-support_request_list = portal.portal_catalog(portal_type="Support Request", id=context.getId()) # with id keyword, this function will return a sequence data type which contains one element.
-
-support_request_object = support_request_list[0].getObject()
-
 # get the all HTML Posts which related to this Support Request
-
-post_list = portal.portal_catalog(portal_type="HTML Post", strict_follow_up_uid=support_request_object.getUid(), sort_on=(('modification_date', 'descending'),), limit=1, validation_state="published") # with id keyword, this function will return a sequence data type which contains one element.
+post_list = portal.portal_catalog(portal_type="HTML Post", strict_follow_up_uid=context.getUid(), sort_on=(('modification_date', 'descending'),), limit=1, validation_state="published") # with id keyword, this function will return a sequence data type which contains one element.
   
 if len(post_list):
   return post_list[0].getTextContent()

bt5/erp5_officejs_support_request_ui/SkinTemplateItem/portal_skins/erp5_officejs_support_request/SupportRequest_getSupportRequestLink.py

-portal = context.getPortalObject()
-
-# get the related Support Request, this should not be None
-support_request_list = portal.portal_catalog(portal_type="Support Request", id=context.getId()) # with id keyword, this function will return a sequence data type which contains one element.
-
-support_request_object = support_request_list[0].getObject()
-
 support_request_link = context.absolute_url()
 hash_position = support_request_link.index('support_request_module')