Bump debhelper compat level to 10

debian/compat

@@ -1 +1 @@
-9
+10

debian/control

@@ -2,10 +2,7 @@ Source: pptpd
 Maintainer: Christoph Biedl <debian.axhn@manchmal.in-ulm.de>
 Homepage: http://poptop.sourceforge.net/dox/
 Standards-Version: 3.9.8
-Build-Depends: debhelper (>= 9~),
-    automake,
-    dh-autoreconf,
-    dh-systemd,
+Build-Depends: debhelper (>= 10~),
     libwrap0-dev,
     ppp-dev (>= 2.4.7-1+~),
 Priority: optional

debian/rules

@@ -3,7 +3,7 @@
 export DEB_BUILD_MAINT_OPTIONS = hardening=+all
 
 %:
-	dh $@ --with systemd --with autoreconf --with ppp
+	dh $@ --with ppp
 
 override_dh_auto_configure:
 	dh_auto_configure -- \