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/sass/components/_modal.scss

@@ -1161,7 +1161,6 @@
     }
 }
 
-.insights-modal,
 .user-groups-modal-create,
 .user-groups-modal-update,
 .view-user-groups-modal,

webapp/channels/src/sass/responsive/_desktop.scss

@@ -1,19 +1,5 @@
 @charset "utf-8";
 
-@media screen and (min-width: 1680px) and (max-width: 2135px) {
-    .inner-wrap {
-        &.move--left {
-            .ActivityAndInsights {
-                .insights-card {
-                    &.large {
-                        align-self: flex-start;
-                    }
-                }
-            }
-        }
-    }
-}
-
 @media screen and (min-width: 1680px) {
     .sidebar--right,
     .sidebar--right--width-holder {