Revert "[BUGFIX] Make sys_file_metadata publishable"

This failed a lot of tests. Needs more investigation.

This reverts commit c76ac7959f21f64ab80e3fb7273165a2064ec9f1.

Change-Id: I3f7be5025c0d31b530f2d6cfebbb08e94e0a2129
Reviewed-on: http://review.typo3.org/34186
Reviewed-by: Helmut Hummel <helmut.hummel@typo3.org>
Tested-by: Helmut Hummel <helmut.hummel@typo3.org>