commands: remove suggestion to clone via `cp -al`
This was added in 2df98f616645 in 2006. This may be possible but it
seems like a bad idea to even suggest it.
Differential Revision: https://phab.mercurial-scm.org/D863
#require serve killdaemons
$ hg clone http://localhost:$HGPORT/ copy
abort: * (glob)
[255]
$ test -d copy
[1]
$ $PYTHON "$TESTDIR/dumbhttp.py" -p $HGPORT --pid dumb.pid
$ cat dumb.pid >> $DAEMON_PIDS
$ hg clone http://localhost:$HGPORT/foo copy2
abort: HTTP Error 404: * (glob)
[255]
$ killdaemons.py