remove the suggestion on gnome-apt as it was removed from debian

see http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=414526

debian/changelog

@@ -37,6 +37,8 @@ apt (0.7.24) UNRELEASED; urgency=low
     - add amd64 for cross building (by Mikhail Gusarov, Closes: #513058)
   * debian/prerm:
     - remove file as nobody will upgrade from 0.4.10 anymore
+  * debian/control:
+    - remove gnome-apt suggestion as it was removed from debian
 
   [ Christian Perrier ]
   * doc/fr/*, doc/po/fr.po:

debian/control

@@ -15,7 +15,7 @@ Depends: ${shlibs:Depends}, debian-archive-keyring
 Priority: important
 Replaces: libapt-pkg-doc (<< 0.3.7), libapt-pkg-dev (<< 0.3.7)
 Provides: ${libapt-pkg:provides}
-Suggests: aptitude | synaptic | gnome-apt | wajig, dpkg-dev, apt-doc, bzip2, lzma, python-apt
+Suggests: aptitude | synaptic | wajig, dpkg-dev, apt-doc, bzip2, lzma, python-apt
 Section: admin
 Description: Advanced front-end for dpkg
  This is Debian's next generation front-end for the dpkg package manager.