Remove old comment from bitcoind.service

deploy/bitcoind.service

@@ -1,14 +1,3 @@
-# It is not recommended to modify this file in-place, because it will
-# be overwritten during package upgrades. If you want to add further
-# options or overwrite existing ones then use
-# $ systemctl edit bitcoind.service
-# See "man systemd.service" for details.
-
-# Note that almost all daemon options could be specified in
-# /etc/bitcoin/bitcoin.conf, but keep in mind those explicitly
-# specified as arguments in ExecStart= will override those in the
-# config file.
-
 [Unit]
 Description=Bitcoin daemon
 Documentation=https://github.com/bitcoin/bitcoin/blob/master/doc/init.md