Revert "[BUGFIX] Make sys_file_metadata publishable"

This failed a lot of tests. Needs more investigation.

This reverts commit 8f06c8d6e40a205cb721b48e3adf5168c049044c.

Change-Id: I4409fb8cf6dfca43d33a798b1b55853d4252ace9
Reviewed-on: http://review.typo3.org/34185
Reviewed-by: Helmut Hummel <helmut.hummel@typo3.org>
Tested-by: Helmut Hummel <helmut.hummel@typo3.org>