Remove superfluous variable + add debug message.

debexpo/plugins/similar.py

@@ -92,9 +92,8 @@ class SimilarPlugin(BasePlugin):
                                   desc = info['desc'], binary = binary)
 
     def test_similar_packages(self):
-        binary_packages = self.package_version.get_binary_packages()
-
-        for bp in binary_packages:
+        for bp in self.package_version.get_binary_packages():
+            log.debug('Adding similar packages for %s' % bp.name)
             self._add_similar_packages(bp.name)
 
 plugin = SimilarPlugin