Remove insights (#23952)

* removed server side

* Updated store layer

* unused import

* Updated autogenerated code template

* Updated tests

* lint fix

* unused translations

* webapp side

* Updated i18n

* lint fix:

* type fix

* Updated snapshots

* Removed insights from API specs

* updated e2e

* Updated e2e tests

* Updated e2e tests

* Removed insights tests

* Removed Insights as possible channel to load in sidebar from test

* Removed more insights tests

* More e2e fixed

* More cleanup

* Lint

* More cleanup in client4 and boards api

* More cleanup

* Fixes

* lint fix

---------

Co-authored-by: maria.nunez <maria.nunez@mattermost.com>
Co-authored-by: Mattermost Build <build@mattermost.com>

webapp/channels/src/plugins/registry.ts

@@ -1154,62 +1154,4 @@ export default class PluginRegistry {
             data,
         });
     });
-
-    registerInsightsHandler = reArg(['handler'], ({handler}) => {
-        store.dispatch({
-            type: ActionTypes.RECEIVED_PLUGIN_INSIGHT,
-            data: {
-                pluginId: this.id,
-                handler,
-            },
-        });
-    });
-
-    // Register a hook to intercept desktop notifications before they occur.
-    // Accepts a function to run before the desktop notification is triggered.
-    // The function has the following signature:
-    //   (post: Post, msgProps: NewPostMessageProps, channel: Channel,
-    //    teamId: string, args: DesktopNotificationArgs) => Promise<{
-    //         error?: string;
-    //         args?: DesktopNotificationArgs;
-    //     }>)
-    //
-    // DesktopNotificationArgs is the following type:
-    //   export type DesktopNotificationArgs = {
-    //     title: string;
-    //     body: string;
-    //     silent: boolean;
-    //     soundName: string;
-    //     url: string;
-    //     notify: boolean;
-    // };
-    //
-    // To stop a desktop notification and allow subsequent hooks to process the notification, return:
-    //   {args: {...args, notify: false}}
-    // To enable a desktop notification and allow subsequent hooks to process the notification, return:
-    //   {args: {...args, notify: true}}
-    // To stop a desktop notification and prevent subsequent hooks from processing the notification, return either:
-    //   {error: 'log this error'}, or {}
-    // To allow subsequent hooks to process the notification, return:
-    //   {args}, or null or undefined (thanks js)
-    //
-    // The args returned by the hook will be used as the args for the next hook, until all hooks are
-    // completed. The resulting args will be used as the arguments for the `notifyMe` function.
-    //
-    // Returns a unique identifier.
-    registerDesktopNotificationHook = reArg(['hook'], ({hook}) => {
-        const id = generateId();
-
-        store.dispatch({
-            type: ActionTypes.RECEIVED_PLUGIN_COMPONENT,
-            name: 'DesktopNotificationHooks',
-            data: {
-                id,
-                pluginId: this.id,
-                hook,
-            },
-        });
-
-        return id;
-    });
 }