Remove reference to depreciated x-user-agent header.

Addresses #1073

I too enjoy breaking changes with no warning.

allianceauth/eveonline/providers.py

@@ -4,6 +4,16 @@ import logging
 import os
 
 SWAGGER_SPEC_PATH = os.path.join(os.path.dirname(os.path.abspath(__file__)), 'swagger.json')
+"""
+Swagger spec operations:
+
+get_alliances_alliance_id
+get_alliances_alliance_id_corporations
+get_corporations_corporation_id
+get_characters_character_id
+get_universe_types_type_id
+"""
+
 
 logger = logging.getLogger(__name__)