Revert "init.d/user: add a respawn_delay value"

this reverts commit 1146ee6.

safe-guarding against new defaults in /etc/rc.conf isn't really great in
retrospect, so ideally we improve the defaults so that rc.conf presets
are not needed.

Bug: #852

Author: navi-desu

init.d/user.in

@@ -21,7 +21,6 @@ notify="fd:3"
 # we should just quit fast.
 respawn_max=3
 respawn_period=5
-respawn_delay=500ms
 
 start_pre() {
 	if [ "$user" = "$RC_SVCNAME" ]; then