default to KIllMode=control-group in services

https://www.man7.org/linux/man-pages/man5/systemd.kill.5.html
discussed in: https://github.com/rootzoll/raspiblitz/issues/1901

home.admin/assets/background.service

@@ -14,7 +14,6 @@ User=root
 Group=root
 Type=simple
 ExecStart=/home/admin/_background.sh
-KillMode=process
 Restart=always
 TimeoutSec=10
 RestartSec=10

home.admin/assets/bitcoind.service

@@ -16,7 +16,6 @@ Type=forking
 PIDFile=/mnt/hdd/bitcoin/bitcoind.pid
 ExecStartPre=-/home/admin/config.scripts/blitz.systemd.sh log blockchain STARTED
 ExecStart=/usr/local/bin/bitcoind -daemon -conf=/mnt/hdd/bitcoin/bitcoin.conf -pid=/mnt/hdd/bitcoin/bitcoind.pid
-KillMode=process
 Restart=always
 TimeoutSec=120
 RestartSec=30

home.admin/assets/litecoind.service

@@ -16,7 +16,6 @@ Type=forking
 PIDFile=/home/bitcoin/.litecoin/litecoind.pid
 ExecStartPre=-/home/admin/config.scripts/blitz.systemd.sh log blockchain STARTED
 ExecStart=/usr/local/bin/litecoind -daemon -conf=/home/bitcoin/.litecoin/litecoin.conf -pid=/home/bitcoin/.litecoin/litecoind.pid
-KillMode=process
 Restart=always
 TimeoutSec=120
 RestartSec=30

home.admin/assets/lnd.service

@@ -17,7 +17,6 @@ User=bitcoin
 Group=bitcoin
 LimitNOFILE=128000
 Type=simple
-KillMode=process
 TimeoutSec=180
 Restart=always
 RestartSec=60

home.admin/config.scripts/bitcoin.chains.sh

@@ -151,7 +151,6 @@ Type=forking
 PIDFile=/mnt/hdd/bitcoin/${prefix}bitcoind.pid
 ExecStart=/usr/local/bin/bitcoind -${CHAIN} -daemon\
  -pid=/mnt/hdd/bitcoin/${prefix}bitcoind.pid
-KillMode=process
 Restart=always
 TimeoutSec=120
 RestartSec=30

home.admin/config.scripts/bonus.circuitbreaker.sh

@@ -101,7 +101,6 @@ ExecStart=/home/circuitbreaker/go/bin/circuitbreaker --network=${chain}net
 User=circuitbreaker
 Group=circuitbreaker
 Type=simple
-KillMode=process
 TimeoutSec=60
 Restart=always
 RestartSec=60

home.admin/config.scripts/bonus.electrs.sh

@@ -403,7 +403,6 @@ ExecStart=/home/electrs/electrs/target/release/electrs --index-batch-size=10 --e
 User=electrs
 Group=electrs
 Type=simple
-KillMode=process
 TimeoutSec=60
 Restart=always
 RestartSec=60

home.admin/config.scripts/bonus.lit.sh

@@ -286,7 +286,6 @@ ExecStart=/usr/local/bin/litd
 User=lit
 Group=lit
 Type=simple
-KillMode=process
 TimeoutSec=60
 Restart=always
 RestartSec=60

home.admin/config.scripts/bonus.loop.sh

@@ -116,7 +116,6 @@ ExecStart=/home/loop/go/bin/loopd --network=${chain}net ${proxy}
 User=loop
 Group=loop
 Type=simple
-KillMode=process
 TimeoutSec=60
 Restart=always
 RestartSec=60

home.admin/config.scripts/bonus.pool.sh

@@ -114,7 +114,6 @@ ExecStart=$proxy /home/pool/go/bin/poold --network=${chain}net --debuglevel=trac
 User=pool
 Group=pool
 Type=simple
-KillMode=process
 TimeoutSec=60
 Restart=always
 RestartSec=60

home.admin/config.scripts/lnd.chain.sh

@@ -143,7 +143,6 @@ Group=bitcoin
 Type=simple
 ExecStart=/usr/local/bin/lnd\
  --configfile=/home/bitcoin/.lnd/${netprefix}lnd.conf
-KillMode=process
 Restart=always
 TimeoutSec=120
 RestartSec=30