NFS: Clean up nfs4_init_callback()
NFS: Clean up nfs4_init_callback()

nfs4_init_callback() is never invoked for NFS versions other than 4.

Signed-off-by: Chuck Lever <e7d8216bf9b1956703857d0050bd04192118f43d@oracle.com>
Signed-off-by: Anna Schumaker <5381043123508d4eed62c465c7c46f2f193a2767@Netapp.com>

KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs