test-obsolete.t: migrate to killdaemons from kill `cat pidfile`

tests/test-check-code-hg.t

@@ -10,10 +10,6 b' New errors are not allowed. Warnings are'
 
   $ hg manifest | xargs "$check_code" --warnings --nolineno --per-file=0 \
   > || false
-  tests/test-obsolete.t:0:
-   >   $ kill `cat hg.pid`
-   don't use kill, use killdaemons.py
-   don't use kill, use killdaemons.py
   tests/test-serve.t:0:
    >   >        kill `cat hg.pid`
    don't use kill, use killdaemons.py

tests/test-obsolete.t

@@ -752,7 +752,7 b' check filelog view'
 
 check that web.view config option:
 
-  $ kill `cat hg.pid`
+  $ "$TESTDIR/killdaemons.py" hg.pid
   $ cat >> .hg/hgrc << EOF
   > [web]
   > view=all
@@ -761,7 +761,7 b' check that web.view config option:'
   $ hg serve -n test -p $HGPORT -d --pid-file=hg.pid -A access.log -E errors.log
   $ "$TESTDIR/get-with-headers.py" --headeronly localhost:$HGPORT 'rev/67'
   200 Script output follows
-  $ kill `cat hg.pid`
+  $ "$TESTDIR/killdaemons.py" hg.pid
 
 Checking _enable=False warning if obsolete marker exists