libxfs: remove the dead {d,log,rt}path variables in libxfs_init

libxfs: remove the dead {d,log,rt}path variables in libxfs_init

These variables are only initialized, and then unlink is called if they
were changed from the initial value, which can't happen.  Remove the
variables and the conditional unlink calls.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Darrick J. Wong <djwong@kernel.org>
Reviewed-by: Carlos Maiolino <cmaiolino@redhat.com>
Signed-off-by: Carlos Maiolino <cem@kernel.org>