Remove unused imports (#1154)

This was uncovered by dependabot using a new version of ansible-core
where I guess the sanity tests now check for unused imports

Author: sc68cal

plugins/module_utils/netbox_ipam.py

@@ -6,10 +6,8 @@
 __metaclass__ = type
 
 # Import necessary packages
-import traceback
 from ipaddress import ip_interface
 from ansible.module_utils._text import to_text
-from ansible.module_utils.basic import missing_required_lib
 
 from ansible_collections.netbox.netbox.plugins.module_utils.netbox_utils import (
     NetboxModule,