MM-53088 - remove autoshow linked board (#23783)

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

e2e-tests/playwright/support/server/default_config.ts

@@ -675,7 +675,6 @@ const defaultServerConfig: AdminConfig = {
         WysiwygEditor: false,
         PeopleProduct: false,
         ReduceOnBoardingTaskList: false,
-        OnboardingAutoShowLinkedBoard: false,
         ThreadsEverywhere: false,
         GlobalDrafts: true,
         OnboardingTourTips: true,