[!!!][TASK] Remove deprecated code from PageRepository

The PageRepository class can now be reduced into smaller parts due
to deprecation removals.

Properties now marked as internal:
- sys_language_uid
- versioningWorkspaceId

Removed properties:
- versioningPreview
- workspaceCache
- error_getRootLine
- error_getRootLine_failPid

Removed public methods:
- getFirstWebPage()
- getDomainStartPage()
- getRootLine()
- getRecordsByField()
- deleteClause()
- checkWorkspaceAccess()
- getFileReferences()

Removed arguments from public methods:
- 4th argument of getRawRecord()

Special argument handling for public methods:
- getPageOverlay() second argument "-1" has to be "null" now
- getPagesOverlay() second argument "-1" has to be "null" now

Resolves: #87195
Releases: master
Change-Id: Iaf7d5e68054db0f9e78d8ea2fc0d8bb712bf3b74
Reviewed-on: https://review.typo3.org/59193


Reviewed-by: Georg Ringer <georg.ringer@gmail.com>
Tested-by: Georg Ringer <georg.ringer@gmail.com>
Tested-by: TYPO3com <no-reply@typo3.com>
Reviewed-by: Anja Leichsenring <aleichsenring@ab-softlab.de>
Tested-by: Anja Leichsenring <aleichsenring@ab-softlab.de>