test(*): remove unnecessary async (#9025)

Author: minseong0324

packages/query-core/src/__tests__/hydration.test.tsx

@@ -133,7 +133,7 @@ describe('dehydration and rehydration', () => {
     hydrationClient.clear()
   })
 
-  test('should not dehydrate queries if dehydrateQueries is set to false', async () => {
+  test('should not dehydrate queries if dehydrateQueries is set to false', () => {
     const queryCache = new QueryCache()
     const queryClient = createQueryClient({ queryCache })
     vi.waitFor(() =>

packages/react-query-persist-client/src/__tests__/PersistQueryClientProvider.test.tsx

@@ -19,7 +19,7 @@ const createMockPersister = (): Persister => {
   let storedState: PersistedClient | undefined
 
   return {
-    async persistClient(persistClient: PersistedClient) {
+    persistClient(persistClient: PersistedClient) {
       storedState = persistClient
     },
     async restoreClient() {
@@ -706,7 +706,7 @@ describe('PersistQueryClientProvider', () => {
       let storedState: PersistedClient | undefined
 
       return {
-        async persistClient(persistClient) {
+        persistClient(persistClient) {
           storedState = persistClient
         },
         async restoreClient() {