Remove feedback widget.

@electron-elements/send-feedback won’t work with Electron 14, and all
it ever did was open your mail client.  Have the “Report an Issue”
menu item direct users to our website instead.

Signed-off-by: Anders Kaseorg <anders@zulip.com>

app/renderer/js/main.ts

@@ -14,7 +14,6 @@ import type {NavItem, ServerConf, TabData} from "../../common/types";
 import FunctionalTab from "./components/functional-tab";
 import ServerTab from "./components/server-tab";
 import WebView from "./components/webview";
-import {feedbackHolder} from "./feedback";
 import {ipcRenderer} from "./typed-ipc-renderer";
 import * as DomainUtil from "./utils/domain-util";
 import * as LinkUtil from "./utils/link-util";
@@ -1171,10 +1170,6 @@ class ServerManagerView {
       },
     );
 
-    ipcRenderer.on("open-feedback-modal", () => {
-      feedbackHolder.classList.add("show");
-    });
-
     ipcRenderer.on("copy-zulip-url", () => {
       clipboard.writeText(this.getCurrentActiveServer());
     });