Remove obsolete flags (all of them) from $wgAntiLockFlags

Some were already commented out here. ALF_NO_BLOCK_LOCK was not, though it
was removed from MediaWiki in r84336 / f1b1aafa1d14. The only other flag,
ALF_NO_LINK_LOCK, was removed in 12757b50f8da, along with the global itself.

Change-Id: I075ab1ca2224ce637493d82084bf60d85d8a7343
Merge "Remove obsolete flags (all of them) from $wgAntiLockFlags"