FreeBSD init: Remove unnecessary daemon -u option (#1924)

The rc.subr framework already takes care of substituting user. So, using
daemon's -u option is double user-substitution and fails if $caddy_user
is non-root.

dist/init/freebsd/caddy

@@ -62,7 +62,7 @@ fi
 pidfile="/var/run/${name}.pid"
 procname="${caddy_bin_path}" #enabled builtin pid checking for start / stop
 command="/usr/sbin/daemon"
-command_args="-u ${caddy_user} -p ${pidfile} /usr/bin/env ${caddy_env} ${procname} -cpu ${caddy_cpu} -log stdout -conf ${caddy_config_path} -agree -email ${caddy_cert_email} < /dev/null >> ${caddy_logfile} 2>&1"
+command_args="-p ${pidfile} /usr/bin/env ${caddy_env} ${procname} -cpu ${caddy_cpu} -log stdout -conf ${caddy_config_path} -agree -email ${caddy_cert_email} < /dev/null >> ${caddy_logfile} 2>&1"
 
 start_precmd="caddy_startprecmd"