Revert "luci-app-ssr-plus:ssr-ad separate control use (#3592)"

This reverts commit 84bf3aad.

package/lean/luci-app-ssr-plus/root/etc/init.d/shadowsocksr

@@ -524,9 +524,6 @@ start() {
 				conf-dir=/tmp/dnsmasq.oversea
 			EOF
 		fi
-		if [ -e "/tmp/dnsmasq.d/ad.conf" ]; then
-			rm -f /tmp/dnsmasq.d/ad.conf
-		fi
 		if [ $(uci_get_by_type global adblock 0) == "0" ]; then
 			rm -f /tmp/dnsmasq.ssr/ad.conf
 		fi
@@ -582,14 +579,9 @@ stop() {
 	else
 		kill -9 $(busybox ps -w | grep pdnsd | grep -v grep | awk '{print $1}') >/dev/null 2>&1
 	fi
-	if [ $(uci_get_by_type global adblock 0) == "0" ]; then
-		rm -f /tmp/dnsmasq.d/ad.conf
-	else
-		cp -f /etc/dnsmasq.ssr/ad.conf /tmp/dnsmasq.d/ad.conf
-	fi
 	if [ -f "/tmp/dnsmasq.d/dnsmasq-ssr.conf" ]; then
 		rm -f /tmp/dnsmasq.d/dnsmasq-ssr.conf
+		/etc/init.d/dnsmasq restart >/dev/null 2>&1
 	fi
-	/etc/init.d/dnsmasq restart >/dev/null 2>&1
 	del_cron
 }