Remove overzealous and incorrect RELEASE_ASSERT causing API test issues

https://bugs.webkit.org/show_bug.cgi?id=284383
rdar://141230069

Unreviewed.

This was added in 287485@main in error.

* Source/WebKit/webpushd/WebPushDaemon.mm:
(WebPushD::WebPushDaemon::showNotification):

Canonical link: https://commits.webkit.org/287786@main

Source/WebKit/webpushd/WebPushDaemon.mm

@@ -976,8 +976,6 @@ static bool connectionMatchesPendingPushMessage(const PushClientConnection& conn
 
 void WebPushDaemon::showNotification(const WebCore::PushSubscriptionSetIdentifier& identifier, const WebCore::NotificationData& notificationData, RefPtr<WebCore::NotificationResources> resources, std::optional<unsigned long long> appBadge, CompletionHandler<void()>&& completionHandler)
 {
-    RELEASE_ASSERT(supportsBuiltinNotifications(identifier));
-
     RetainPtr content = adoptNS([[UNMutableNotificationContent alloc] init]);
 
     [content setDefaultActionBundleIdentifier:platformDefaultActionBundleIdentifier(identifier)];