Drop all exceptions for legacy validation

This patch needs to merge once we've cleaned up all of the exceptions
for the legacy file validation which will ensure that all repositories
are cleanly retired.

Change-Id: If10ecaf0222a026d79dbee2aacecd86cb98ac681

tools/validate-legacy.py

@@ -21,11 +21,7 @@ import requests
 import yaml
 
 FILES_URL = "https://opendev.org/api/v1/repos/{}/git/trees/master"
-IGNORED_REPOS = [
-    'openstack/python-dracclient',
-    'openstack/networking-l2gw',
-    'openstack/networking-l2gw-tempest-plugin'
-]
+IGNORED_REPOS = []
 
 parser = argparse.ArgumentParser()
 parser.add_argument(