[PATCH 3 of 4 V2] import-checker: remove useless module name supposition in checkmod

[FUJIWARA Katsunori]

# HG changeset patch
# User FUJIWARA Katsunori <foozy at lares.dti.ne.jp>
# Date 1431699038 -32400
#      Fri May 15 23:10:38 2015 +0900
# Node ID 0403363ab33ce62c84ab1fc004da081357516362
# Parent  ab820b3793cc9a2680cc90f11fd760750c276adb
import-checker: remove useless module name supposition in checkmod

Previous patch ensures that all module names stored in "imports" are
absolute one, and it makes module name supposition in "checkmod" useless.

diff --git a/contrib/import-checker.py b/contrib/import-checker.py
--- a/contrib/import-checker.py
+++ b/contrib/import-checker.py
@@ -279,8 +279,6 @@ def checkmod(mod, imports):
     while visit:
         path = visit.pop(0)
         for i in sorted(imports.get(path[-1], [])):
-            if i not in stdlib_modules and not i.startswith('mercurial.'):
-                i = mod.rsplit('.', 1)[0] + '.' + i
             if len(path) < shortest.get(i, 1000):
                 shortest[i] = len(path)
                 if i in path:
@@ -302,10 +300,12 @@ def rotatecycle(cycle):
 def find_cycles(imports):
     """Find cycles in an already-loaded import graph.
 
-    >>> imports = {'top.foo': ['bar', 'os.path', 'qux'],
-    ...            'top.bar': ['baz', 'sys'],
-    ...            'top.baz': ['foo'],
-    ...            'top.qux': ['foo']}
+    All module names contained in `imports` should be absolute one.
+
+    >>> imports = {'top.foo': ['top.bar', 'os.path', 'top.qux'],
+    ...            'top.bar': ['top.baz', 'sys'],
+    ...            'top.baz': ['top.foo'],
+    ...            'top.qux': ['top.foo']}
     >>> print '\\n'.join(sorted(find_cycles(imports)))
     top.bar -> top.baz -> top.foo -> top.bar
     top.foo -> top.qux -> top.foo