Remove mentioning of screen profiler

[alexbudarov]

Environment

• Existing page: https://doc.cuba-platform.com/manual-7.2/roles_example.html

Description of the bug or enhancement

see https://www.cuba-platform.ru/discuss/t/profilirovshhik-ekranov-screen-profiler-na-platforme-7-2/4611

Screen profiler has been removed from the framework. But its mentions are still existing in docs.