Back out Electron 7.1.1/7.1.2 upgrades

Summary:
Original commit changeset: eddfbb3571c7
Original commit changeset: f7300f527b65

Pains me to do this, but probably our best chance right now to get a release out.

Reviewed By: cekkaewnumchai

Differential Revision: D18687890

fbshipit-source-id: 05d13aca71457ca6dd19f5b45d58158ae223e66f

src/dispatcher/application.tsx

@@ -7,7 +7,7 @@
  * @format
  */
 
-import {remote, ipcRenderer, IpcRendererEvent} from 'electron';
+import {remote, ipcRenderer} from 'electron';
 import {toggleAction} from '../reducers/application';
 import {setStaticView} from '../reducers/connections';
 import {Store} from '../reducers/index.js';
@@ -57,7 +57,7 @@ export default (store: Store, logger: Logger) => {
 
   ipcRenderer.on(
     'flipper-protocol-handler',
-    (_event: IpcRendererEvent, query: string) => {
+    (_event: string, query: string) => {
       const uri = new URL(query);
       if (query.startsWith('flipper://import')) {
         const {search} = new URL(query);
@@ -102,14 +102,11 @@ export default (store: Store, logger: Logger) => {
     },
   );
 
-  ipcRenderer.on(
-    'open-flipper-file',
-    (_event: IpcRendererEvent, url: string) => {
-      tryCatchReportPlatformFailures(() => {
-        return importFileToStore(url, store);
-      }, `${IMPORT_FLIPPER_TRACE_EVENT}:Deeplink`);
-    },
-  );
+  ipcRenderer.on('open-flipper-file', (_event: string, url: string) => {
+    tryCatchReportPlatformFailures(() => {
+      return importFileToStore(url, store);
+    }, `${IMPORT_FLIPPER_TRACE_EVENT}:Deeplink`);
+  });
 
   if (process.env.FLIPPER_PORTS) {
     const portOverrides = parseFlipperPorts(process.env.FLIPPER_PORTS);

src/dispatcher/notifications.tsx

@@ -12,7 +12,7 @@ import {Logger} from '../fb-interfaces/Logger';
 import {PluginNotification} from '../reducers/notifications';
 import {FlipperPlugin, FlipperDevicePlugin} from '../plugin';
 import isHeadless from '../utils/isHeadless';
-import {ipcRenderer, IpcRendererEvent} from 'electron';
+import {ipcRenderer} from 'electron';
 import {selectPlugin} from '../reducers/connections';
 import {
   setActiveNotifications,
@@ -37,7 +37,6 @@ export default (store: Store, logger: Logger) => {
   ipcRenderer.on(
     'notificationEvent',
     (
-      _event: IpcRendererEvent,
       _e: Error,
       eventName: NotificationEvents,
       pluginNotification: PluginNotification,