Extraneous sleep call

This is in `launcher_utils.py`:

```Python
def _await_fluent_launch(
server_info_file_name: str, start_timeout: int, sifile_last_mtime: float
):
"""Wait for successful fluent launch or raise an error."""
while True:
if Path(server_info_file_name).stat().st_mtime > sifile_last_mtime:
time.sleep(1) # <--- should not sleep here
logger.info("Fluent has been successfully launched.")
break
if start_timeout == 0:
raise TimeoutError("The launch process has timed out.")
time.sleep(1)
start_timeout -= 1
logger.info("Waiting for Fluent to launch...")
if start_timeout >= 0:
logger.info(f"...{start_timeout} seconds remaining")
```

Open launcher_utils.py and start at _await_fluent_launch, where the issue marks an unnecessary sleep after the server-info file changes. Remove that delay and verify that the launch-success path proceeds immediately; run the relevant launcher tests if available.

Written by the indexing model from the issue text.