Remove explicit mentioning of upstream changelog in debian/rules

dh_installchangelogs finds it by itself if it exist. That way building
out of a freshly clone git repository does not fail due to a missing
upstream changelog.

debian/changelog

@@ -17,6 +17,10 @@ xen-tools (4.4~dev-1) UNRELEASED; urgency=low
     - Makefile accepts DESTDIR=…
   * Add debian/gbp.conf to be able to to build xen-tools with
     git-buildpackage.
+  * debian/rules: Don't mention (generated) upstream changelog explicitly,
+    dh_installchangelogs finds it by itself if it exist. That way building
+    out of a freshly clone git repository does not fail due to a missing
+    upstream changelog.
 
  -- Axel Beckert <abe@debian.org>  Tue, 13 Nov 2012 23:37:54 +0100
 

debian/rules

@@ -43,7 +43,7 @@ binary-indep: build install
 	dh_testroot
 	dh_install
 	dh_installexamples debian/examples/setup-kernel-initrd debian/examples/update-modules
-	dh_installchangelogs ChangeLog
+	dh_installchangelogs
 	dh_installdocs
 	dh_compress
 	dh_fixperms