fix: remove @json_resp

backend/geonature/core/gn_synthese/routes.py

@@ -1041,7 +1041,6 @@ def taxon_stats(scope, cd_ref):
 
     @routes.route("/taxon_observers/<int:cd_ref>", methods=["GET"])
     @permissions.check_cruved_scope("R", get_scope=True, module_code="SYNTHESE")
-    @json_resp
     def taxon_observers(scope, cd_ref):
         per_page = request.args.get("per_page", 10, int)
         page = request.args.get("page", 1, int)