Removed disabled code and extraneous empty line

Signed-off-by: Morten Hustveit <mortehu@google.com>
Pass -1 instead of 0 to waitpid

This change ensures we reap children who started their own session (i.e.
any child started by a shortcut key).

Signed-off-by: Morten Hustveit <mortehu@google.com>
Reload configuration on SIGUSR1

Prior to this patch, you would have to restart the window manager to
refresh its configuration.

Signed-off-by: Morten Hustveit <mortehu@google.com>