Revert "pl-fe: migrate /api/v*/instance to tanstack query"

This reverts commit 1f8b79f309.

packages/pl-fe/src/hooks/use-features.ts

@@ -1,8 +1,7 @@
 import { Features } from 'pl-api';
 
-import { useInstance } from 'pl-fe/api/hooks/instance/use-instance';
-
 import { useAppSelector } from './use-app-selector';
+import { useInstance } from './use-instance';
 
 /** Get features for the current instance. */
 const useFeatures = (): Features => {

packages/pl-fe/src/hooks/use-instance.ts

@@ -0,0 +1,6 @@
+import { useAppSelector } from './use-app-selector';
+
+/** Get the Instance for the current backend. */
+const useInstance = () => useAppSelector((state) => state.instance);
+
+export { useInstance };

packages/pl-fe/src/hooks/use-registration-status.ts

@@ -1,9 +1,8 @@
-import { useInstance } from 'pl-fe/api/hooks/instance/use-instance';
-
 import { useFeatures } from './use-features';
+import { useInstance } from './use-instance';
 
 const useRegistrationStatus = () => {
-  const { data: instance } = useInstance();
+  const instance = useInstance();
   const features = useFeatures();
 
   return {

packages/pl-fe/src/hooks/use-vapid-key.ts

@@ -1,11 +0,0 @@
-import { useInstance } from 'pl-fe/api/hooks/instance/use-instance';
-
-import { useAppSelector } from './use-app-selector';
-
-const useVapidKey = () => {
-  const { data: instance } = useInstance();
-
-  return useAppSelector((state) => instance.configuration.vapid.public_key || state.auth.app?.vapid_key);
-};
-
-export { useVapidKey };