Fix: Resolve more instances of tests which mutated global states (#12395)

src/paperless_ai/tests/test_embedding.py

@@ -3,7 +3,6 @@ from unittest.mock import MagicMock
 from unittest.mock import patch
 
 import pytest
-from django.conf import settings
 
 from documents.models import Document
 from paperless.models import LLMEmbeddingBackend
@@ -19,14 +18,6 @@ def mock_ai_config():
         yield MockAIConfig
 
 
-@pytest.fixture
-def temp_llm_index_dir(tmp_path):
-    original_dir = settings.LLM_INDEX_DIR
-    settings.LLM_INDEX_DIR = tmp_path
-    yield tmp_path
-    settings.LLM_INDEX_DIR = original_dir
-
-
 @pytest.fixture
 def mock_document():
     doc = MagicMock(spec=Document)