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>

api/Makefile

@@ -11,7 +11,6 @@ build-v4: node_modules playbooks
 	@echo Building mattermost openapi yaml for v4
 
 	@if [ -r $(PLAYBOOKS_SRC)/merged-tags.yaml ]; then cat $(PLAYBOOKS_SRC)/merged-tags.yaml > $(V4_YAML); else cat $(V4_SRC)/introduction.yaml > $(V4_YAML); fi
-	@cat $(V4_SRC)/insights.yaml >> $(V4_YAML)
 	@cat $(V4_SRC)/users.yaml >> $(V4_YAML)
 	@cat $(V4_SRC)/status.yaml >> $(V4_YAML)
 	@cat $(V4_SRC)/teams.yaml >> $(V4_YAML)