Fix lint issues in test script

- Use crew variable to avoid F841 unused variable error
- Remove API key logging to address CodeQL security alert
- Make path portable using os.path.join

Co-Authored-By: João <joao@crewai.com>

test_tracing_auth.py

@@ -3,17 +3,22 @@
 Test script for issue #3559 - TraceBatchManager authentication handling
 """
 
+import os
 import sys
-sys.path.insert(0, '/home/ubuntu/repos/crewAI/src')
+
+sys.path.insert(0, os.path.join(os.path.dirname(__file__), 'src'))
 
 def test_tracing_auth_issue():
     """Test that tracing authentication issue is fixed"""
 
     try:
-        from crewai.events.listeners.tracing.trace_batch_manager import TraceBatchManager
-        from crewai.cli.authentication.token import AuthError
         from unittest.mock import patch
 
+        from crewai.cli.authentication.token import AuthError
+        from crewai.events.listeners.tracing.trace_batch_manager import (
+            TraceBatchManager,
+        )
+
         print("Test 1: TraceBatchManager creation without authentication")
 
         with patch(
@@ -21,7 +26,7 @@ def test_tracing_auth_issue():
             side_effect=AuthError("No token found, make sure you are logged in")
         ):
             batch_manager = TraceBatchManager()
-            print(f"✓ TraceBatchManager created successfully with empty API key: '{batch_manager.plus_api.api_key}'")
+            print("✓ TraceBatchManager created successfully with empty API key")
 
             batch = batch_manager.initialize_batch({"user_id": "test"}, {"crew_name": "test"})
             if batch is not None:
@@ -37,7 +42,7 @@ def test_tracing_auth_issue():
         return False
 
     try:
-        from crewai import Agent, Crew, Task, LLM
+        from crewai import LLM, Agent, Crew, Task
 
         print("\nTest 2: Crew creation without authentication")
 
@@ -64,7 +69,7 @@ def test_tracing_auth_issue():
                 verbose=False
             )
 
-            print("✓ Crew created successfully without authentication errors")
+            print(f"✓ Crew created successfully without authentication errors: {len(crew.agents)} agents, {len(crew.tasks)} tasks")
 
     except Exception as e:
         print(f"✗ Crew creation test failed: {e}")