The core_security check (HA < 2021.1.5 with custom components) and the
ResolutionNotify class that created persistent notifications for it are
no longer needed. The minimum supported HA version is well past 2021.1.5,
so this check can never trigger. The notify module was the only consumer
of persistent notifications and had no other users.
Co-authored-by: Claude Opus 4.6 <noreply@anthropic.com>