test(auth): remove stale no-cover pragma on covered line

Author: Mrutunjay Kinagi

tests/client/test_auth.py

@@ -45,7 +45,7 @@ def __init__(self):
         self._client_info: OAuthClientInformationFull | None = None
 
     async def get_tokens(self) -> OAuthToken | None:
-        return self._tokens  # pragma: no cover
+        return self._tokens
 
     async def set_tokens(self, tokens: OAuthToken) -> None:
         self._tokens = tokens