Use shorthand to remove the "id" item from dict

No need to generate an exception and stack trace.

Signed-off-by: Ivan Kanakarakis <ivan.kanak@gmail.com>

Author: c00kiemon5ter

src/saml2/client_base.py

@@ -444,10 +444,7 @@ def create_authn_request(self, destination, vorg="", scoping=None,
                                                   **kwargs)
             args.update(_args)
 
-        try:
-            del args["id"]
-        except KeyError:
-            pass
+        args.pop("id", None)
 
         if sign is None:
             sign = self.authn_requests_signed