tests: remove #require killdaemons
The killdaemons hghave feature has returned True since it was
introduced in 448d0c452140. As such, "#require killdaemons" has
no effect and is superfluous. So we remove instances of it.
Differential Revision: https://phab.mercurial-scm.org/D3442
#require serve
$ 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