Finish dropping the 'description' column.

I missed some in aef7d5952e.

swh/lister/cran/lister.py

@@ -26,8 +26,7 @@ class CRANLister(SimpleLister):
         """
         return create_task_dict(
             'load-%s' % origin_type, 'recurring',
-            kwargs.get('name'), origin_url, kwargs.get('version'),
-            project_metadata=kwargs.get('description'))
+            kwargs.get('name'), origin_url, kwargs.get('version'))
 
     def r_script_request(self):
         """Runs R script which uses inbuilt API to return a json

swh/lister/gitlab/lister.py

@@ -39,7 +39,6 @@ class GitLabLister(PageByPageHttpLister):
             'html_url': repo['web_url'],
             'origin_url': repo['http_url_to_repo'],
             'origin_type': 'git',
-            'description': repo['description'],
         }
 
     def transport_quota_check(self, response):