Remove unused rich import statements

Eliminated unnecessary imports of the 'rich' module from uploader.py and test_dataset_update.py to clean up the codebase.

Author: JR-1991

easyDataverse/uploader.py

@@ -1,6 +1,5 @@
 from urllib.parse import urljoin
 import httpx
-import rich
 
 from rich.panel import Panel
 from rich.console import Console

tests/integration/test_dataset_update.py

@@ -2,7 +2,6 @@
 
 import pytest
 import httpx
-import rich
 
 from easyDataverse import Dataverse
 from easyDataverse.license import CustomLicense, License