metrics/main.py; fix removed group role key (equal group name)

This key is no more send by vidjil metrics.

metrics/main.py

@@ -183,18 +183,14 @@ vidjil_api_request_config_analysis\
     return string
 
 def convert_configs_analysis_by_groups(metrics_key, formater, data, url_server, metrics_user_id):
-    # "configs_analysis": [{
-    #       "_extra": {"COUNT(`results_file`.`id`)": 12 },
-    #       "config": {"name": "multi+inc+xxx", "program": "vidjil"},
-    #       "results_file": {"config_id": 2 }
-    #     }, ... ],
+    # return f"\n\n=*=*= convert_configs_analysis_by_groups ==> {data[:2]}\n\n\n" # 'count': 1, 'group_id': 1
     string = f"\
 # HELP vidjil_api_request_config_analysis_by_groups {formater['description']}\n\
 # TYPE vidjil_api_request_config_analysis_by_groups {formater['type']}\n"
     for elt in data:
         string += f"\
 vidjil_api_request_config_analysis_by_groups\
-{{config_name=\"{elt['config']['name'].replace('+','_')}\", config_program=\"{elt['config']['program']}\", config_id=\"{elt['results_file']['config_id']}\", group=\"{elt['auth_group']['role']}\", server=\"{url_server}\"}} \
+{{config_name=\"{elt['config']['name'].replace('+','_')}\", config_program=\"{elt['config']['program']}\", config_id=\"{elt['results_file']['config_id']}\", server=\"{url_server}\"}} \
 {elt['_extra']['COUNT(`results_file`.`id`)']}\n"
     return string