Remove unused FSAL_OWNER_OK flag

This flag was originally implemented to allow permission checking to evaluate
the conditions where the file owner is allowed access despite the mode or ACL.
This condition is now evaluated directly for I/O operations.

Signed-off-by: Frank S. Filz <ffilz@us.ibm.com>
MORE Strip unused FSAL access check routines

Signed-off-by: Frank S. Filz <ffilz@us.ibm.com>
Remove unused FSAL_F_OK flag

Signed-off-by: Frank S. Filz <ffilz@us.ibm.com>