Ensure code is deleted with user.

src/Concerns/Mfa.php

@@ -5,6 +5,7 @@
 use Illuminate\Database\Eloquent\Builder;
 use Illuminate\Database\Eloquent\Relations\Relation;
 use Illuminate\Support\Str;
+use Mfa\Contracts\MfaUser;
 use Mfa\Models\MfaCode;
 
 trait Mfa
@@ -62,4 +63,17 @@ public function checkMfaCode(string $code): bool
  {
  return $this->mfaCode?->code === $code;
  }
+
+ /**
+ * The "booted" method of the model.
+ * Delete the MFA code record on user deletion.
+ *
+ * @return void
+ */
+ protected static function booted()
+ {
+ static::deleted(function (MfaUser $user) {
+ $user->mfaCode?->delete();
+ });
+ }
 }