Remove try/catch inside kill()

[ehmicky]

There are only two ways childProcess.kill() might throw:

1. invalid signal argument
2. signal not supported by current OS (see here and there)

Both conditions cannot happen with kill('SIGKILL'), since that signal is supported on all OS.
When the child process has already exited, kill() returns false.

So the try/catch wrapping kill('SIGKILL') is not needed.

@zokker13

[zokker13]

I thought about that the kill might fail if you start the process-to-be with sudo so the process has another owner. But it turns out that the kill just returns false which is fine. :)