Fix lint issues: remove unused imports

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

src/crewai/tools/agent_tools/add_image_tool.py

@@ -1,4 +1,4 @@
-from typing import Dict, Optional, Union
+from typing import Optional
 
 from pydantic import BaseModel, Field
 

src/crewai/tools/agent_tools/base_agent_tools.py

@@ -1,5 +1,5 @@
 import logging
-from typing import Any, List, Optional
+from typing import List, Optional
 
 from pydantic import Field