removed double query for realm roles (#471)

src/realm-roles/RealmRolesSection.tsx

@@ -1,29 +1,13 @@
-import React, { useEffect, useState } from "react";
+import React from "react";
 import { PageSection } from "@patternfly/react-core";
 import { ViewHeader } from "../components/view-header/ViewHeader";
-import { asyncStateFetch, useAdminClient } from "../context/auth/AdminClient";
+import { useAdminClient } from "../context/auth/AdminClient";
 import { RolesList } from "./RolesList";
-import { useErrorHandler } from "react-error-boundary";
 
 export const RealmRolesSection = () => {
   const adminClient = useAdminClient();
-  const [listRoles, setListRoles] = useState(false);
-  const handleError = useErrorHandler();
 
-  useEffect(() => {
+  const loader = (first?: number, max?: number, search?: string) => {
-    return asyncStateFetch(
-      () => {
-        return Promise.all([adminClient.roles.find()]);
-      },
-
-      (response) => {
-        setListRoles(!(response[0] && response[0].length > 0));
-      },
-      handleError
-    );
-  }, []);
-
-  const loader = async (first?: number, max?: number, search?: string) => {
     const params: { [name: string]: string | number } = {
       first: first!,
       max: max!,
@@ -35,11 +19,7 @@ export const RealmRolesSection = () => {
       params.search = searchParam;
     }
 
-    if (!listRoles && !searchParam) {
+    return adminClient.roles.find(params);
-      return [];
-    }
-
-    return await adminClient.roles.find(params);
   };
 
   return (