Remove "Conditional -z for old protocols" because those old

protocols are no longer supported.

TODO

@@ -16,7 +16,6 @@ Handling IPv6 on old machines
 Other IPv6 stuff:
 Add ACL support							2001/12/02
 Lazy directory creation
-Conditional -z for old protocols
 proxy authentication						2002/01/23
 SOCKS								2002/01/23
 FAT support
@@ -255,21 +254,6 @@ Lazy directory creation
                       --          --
 
 
-Conditional -z for old protocols
-
-  After we get the @RSYNCD greeting from the server, we know it's
-  version but we have not yet sent the command line, so we could just
-  remove the -z option if the server is too old.
-
-  For ssh invocation it's not so simple, because we actually use the
-  command line to start the remote process.  However, we only actually
-  do compression in token.c, and we could therefore once we discover
-  the remote version emit an error if it's too old.  I'm not sure if
-  that's a good tradeoff or not.
-
-                      --          --
-
-
 proxy authentication						2002/01/23
 
   Allow RSYNC_PROXY to be http://user:pass@proxy.foo:3128/, and do