style: Remove trailing whitespace to fix linter

Author: sohampanda000

zulip/zulip/__init__.py

@@ -665,10 +665,8 @@ def end_error_retry(succeeded: bool) -> None:
                         wait_time = float(res.json().get("retry-after", res.headers.get("Retry-After", 1.0)))
                     except Exception:
                         wait_time = 1.0
-                    
                     if self.verbose:
                         print(f"Rate limit hit! Sleeping for {wait_time} seconds before retrying...")
-                    
                     time.sleep(wait_time)
                     continue