Fix some linter errors

Author: white-gecko

databusclient/cli.py

@@ -36,4 +36,4 @@ def deploy(
 
 @app.command()
 def download(collection: str):
-    typer.echo(f"TODO")
+    typer.echo("TODO")

databusclient/client.py

@@ -3,7 +3,6 @@
 import requests
 import hashlib
 import json
-from urllib.parse import urldefrag
 
 __debug = False