Fix linter errors in CLI and tests

tests/integration/test_report_generation.py

@@ -3,9 +3,7 @@
 Tests the full report generation pipeline from test run to PDF output.
 """
 
-import json
 import tempfile
-from datetime import datetime
 from pathlib import Path
 from uuid import UUID, uuid4
 

tests/unit/reporting/test_html_renderer.py

@@ -5,7 +5,6 @@ from datetime import datetime
 import pytest
 
 from py_dvt_ate.data.models import TestResult, TestRun, TestStatus
-from py_dvt_ate.reporting.exceptions import TemplateRenderError
 from py_dvt_ate.reporting.models import ReportConfig, ReportData
 from py_dvt_ate.reporting.renderers.html import HTMLRenderer