fix(tests): Remove unused preview variables in wizard tests

- Remove unused 'preview' variable assignments in test cases
- Tests still verify preview generation works correctly
- Fixes F841 lint warnings

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

Author: silversurfer562

tests/unit/wizards/test_patient_assessment_wizard.py

@@ -6,11 +6,8 @@
 Generated: 2026-01-05T20:15:06.683937
 """
 
-import asyncio
-from unittest.mock import AsyncMock, MagicMock, patch
 
 import pytest
-
 from wizards.patient_assessment_wizard import PatientAssessmentWizard
 
 
@@ -67,7 +64,7 @@ async def test_preview_does_not_finalize(self, wizard):
         wizard_id = session["wizard_id"]
 
         # Generate preview
-        preview = await wizard.preview(wizard_id)
+        await wizard.preview(wizard_id)
 
         # Check wizard NOT marked complete
         session = await wizard.get_session(wizard_id)

tests/unit/wizards/test_test_e2e_wizard_wizard.py

@@ -6,11 +6,8 @@
 Generated: 2026-01-05T20:10:24.248597
 """
 
-import asyncio
-from unittest.mock import AsyncMock, MagicMock, patch
 
 import pytest
-
 from wizards.test_e2e_wizard_wizard import TestE2eWizardWizard
 
 
@@ -67,7 +64,7 @@ async def test_preview_does_not_finalize(self, wizard):
         wizard_id = session["wizard_id"]
 
         # Generate preview
-        preview = await wizard.preview(wizard_id)
+        await wizard.preview(wizard_id)
 
         # Check wizard NOT marked complete
         session = await wizard.get_session(wizard_id)