[FEATURE] Remove fields from global settings in extension manager

Resolves: #57523
Releases: 6.1, 4.7, 4.5
Change-Id: I25ccec9cab9899ff2e83c7ee7fc2de5b48a79ae4
Reviewed-on: https://review.typo3.org/29328
Reviewed-by: Ralf Zimmermann
Tested-by: Ralf Zimmermann