Doc: Remove unused pages


-The pages are empty and there are no links to them.

Task-number: QTBUG-144260
Change-Id: I49033aea065e593a7d6eab37eafbecf4c112e49c
Reviewed-by: Alexei Cazacov <alexei.cazacov@qt.io>
commit07a89e910b629497a49eabe1a557c2f7cc2499f0
parenteb84fcdfa86fbd7e49a06f30cdd2e995e05e045f
authorJerome Pasion <jerome.pasion@qt.io>
committerJerome Pasion <jerome.pasion@qt.io>
commit timeTue, 5 May 2026 12:25:03 +0000