killdaemons: drop superfluous L suffix from constant
As far as I'm aware PEP 237[0] means this suffix is superfluous even
on Python 2.4, and we can just drop it, which makes this code happy on
Python 3.
0: http://legacy.python.org/dev/peps/pep-0237/
Testing that hghave does not crash when checking features
$ "$TESTDIR/hghave" --test-features 2>/dev/null