Don't restrict gtk2 dh_shlibdeps hack to Ubuntu

debian/changelog

@@ -2,7 +2,6 @@ gtk+2.0 (2.24.31-4) UNRELEASED; urgency=medium
 
   * Don't have gtk2-engines-pixbuf depend on libgtk2.0-0 to allow
     themes to be installed without requiring GTK+ 2 to be installed.
-    Only make that change on Ubuntu for now.
 
  -- Jeremy Bicha <jbicha@debian.org>  Wed, 29 Nov 2017 21:07:12 -0500
 

debian/rules

@@ -295,11 +295,7 @@ binary-arch: build-arch $(maybe_check) install-arch $(call dh_subst_files,$(BINA
 		-- -c4
 	dh_girepository -pgir1.2-gtk-2.0
 	dh_installdeb -s
-ifeq (yes,$(shell dpkg-vendor --derives-from Ubuntu && echo yes))
 	dh_shlibdeps -p$(PIXBUF_PKG) -- -xlibgtk2.0-0
-else
-	dh_shlibdeps -p$(PIXBUF_PKG)
-endif
 	# --remaining-packages didn't work right so let's at least make sure
 	# it doesn't run a second time for the pixbuf .so
 	dh_shlibdeps --remaining-packages -Xlibpixmap.so