Stop adding a handler to http.server logger manually

This was causing duplicate log lines.

Signed-off-by: Andrej Shadura <andrew.shadura@collabora.co.uk>

obs_proxy/utils.py

@@ -122,9 +122,6 @@ def configure_logging():
     for logger_name in quiet_loggers:
         logging.getLogger(logger_name).setLevel(logging.INFO)
 
-    http_logger = logging.getLogger("http.server")
-    http_logger.addHandler(handler)
-
 
 def shorten(text: str, width: int = 512, placeholder: str = "...") -> str:
     r"""