Re-added support for completing removals in tab-completer

The broken "do_hint" was caused by lack of versions in the resulting
hint.

Signed-off-by: Niels Thykier <niels@thykier.net>

completer.py

@@ -34,15 +34,15 @@ class Completer:
         # - it might contain too many items, but meh
         complete = []
         for e in britney.excuses:
-            if e.name[0] == '-':
-                # do_hint does not work with removals anyway
-                continue
-            else:
             ver = None
             pkg = e.name
+            suite = 'unstable'
+            if pkg[0] == '-':
+                suite = 'testing'
+                pkg = pkg[1:]
             if "/" in pkg:
                 pkg = pkg.split("/")[0]
-                name = "%s/%s" % (e.name, britney.sources['unstable'][pkg][0]) # 0 == VERSION
+            name = "%s/%s" % (e.name, britney.sources[suite][pkg][0]) # 0 == VERSION
             complete.append(name)
         self.packages = sorted(complete)