test-inotify-issue1542.t: migrate to killdaemons from kill `cat pidfile`

tests/test-check-code-hg.t

@@ -10,9 +10,6 b' New errors are not allowed. Warnings are'
 
   $ hg manifest | xargs "$check_code" --warnings --nolineno --per-file=0 \
   > || false
-  tests/test-inotify-issue1542.t:0:
-   >   $ kill `cat hg.pid`
-   don't use kill, use killdaemons.py
   tests/test-inotify-issue1556.t:0:
    >   $ kill `cat hg.pid`
    don't use kill, use killdaemons.py

tests/test-inotify-issue1542.t

@@ -33,4 +33,4 b' status'
 
 Are we able to kill the service? if not, the service died on some error
 
-  $ kill `cat hg.pid`
+  $ "$TESTDIR/killdaemons.py" hg.pid