minor code cleanup

Cython/Compiler/Nodes.py

@@ -914,11 +914,10 @@ class CBaseTypeNode(Node):
     #   analyse
     #     Returns the type.
 
-    pass
-
     def analyse_as_type(self, env):
         return self.analyse(env)
 
+
 class CAnalysedBaseTypeNode(Node):
     # type            type
 
@@ -927,6 +926,7 @@ class CAnalysedBaseTypeNode(Node):
     def analyse(self, env, could_be_name = False):
         return self.type
 
+
 class CSimpleBaseTypeNode(CBaseTypeNode):
     # name             string
     # module_path      [string]     Qualifying name components