Remove PAT field (for Code Suggestions) from SM: UI
PAT field is no longer required in App Settings from 16.3: !127987 (merged)
From 16.4, we remove it from UI and start the column deprecation process
This issue covers UI changes.
Docs will be updated separately under #422052 (closed).
DB column removal will be tracked in #422174 (closed)
Edited by Aleksei Lipniagov