Remove Unneccessary kill -9

Since piholeFTL test properly spins down it's no longer
necessary to kill it. He's dead Jim

Merge #300, added `piholeFTL test` to the startup sequence to
replace dnsmasq as a dependency for validate_env and gravity.sh.
kill -9 was kept as a work around to a standing issue that
`piholeFTL test` didn't spin down on it's own. This was fixed
in pi-hole/FTL#1067, landed on Apr 14 2021 and confirmed
working, as evinced by #834 which was filed the same day it
that fix landed.

Signed-off-by: D.Rect <48034372+DistractionRectangle@users.noreply.github.com>

s6/debian-root/etc/cont-init.d/20-start.sh

@@ -7,8 +7,6 @@ if [ "${PH_VERBOSE:-0}" -gt 0 ] ; then
     bashCmd='bash -e -x'
 fi
 
-# used to start dnsmasq here for gravity to use...now that conflicts port 53
-
 $bashCmd /start.sh
 # Gotta go fast, no time for gravity
 if [ -n "$PYTEST" ]; then
@@ -26,7 +24,4 @@ else
     [ ! -e /etc/cron.d/gravity-on-boot ] || rm /etc/cron.d/gravity-on-boot &>/dev/null
 fi
 
-# Kill dnsmasq because s6 won't like it if it's running when s6 services start
-kill -9 $(pgrep pihole-FTL) || true # TODO: REVISIT THIS SO AS TO NOT kill -9
-
 pihole -v