feat: configurable recipient list for notifications of role nominations

src/Repository/UserRepository.php

@@ -71,32 +71,6 @@ class UserRepository extends ServiceEntityRepository
             ->getResult();
     }
 
-    /**
-     * The administrators who can approve a role nomination.
-     *
-     * The quote-anchored needle is load-bearing. ROLE_ADMIN_PENDING lives in the same JSON column,
-     * and an unanchored '%ROLE_ADMIN%' would match it — which would mail the very people whose own
-     * nomination is unapproved about other people's nominations. The result is filtered through
-     * Role::effectiveOnly() as well, so the guarantee does not rest on the LIKE alone.
-     *
-     * @return User[]
-     */
-    public function findAdministrators(): array
-    {
-        /** @var User[] $candidates */
-        $candidates = $this->createQueryBuilder('u')
-            ->andWhere('u.roles LIKE :admin')
-            ->setParameter('admin', '%"'.Role::ADMIN.'"%')
-            ->orderBy('u.email', 'ASC')
-            ->getQuery()
-            ->getResult();
-
-        return array_values(array_filter(
-            $candidates,
-            static fn (User $user): bool => \in_array(Role::ADMIN, Role::effectiveOnly($user->getRoles()), true),
-        ));
-    }
-
     /**
      * Everyone worth filtering an accommodation booking by: current groups staff, plus whoever
      * a booking is still assigned to even after losing the role — otherwise a booking assigned