Remove unused diagram attribute

Author: st0012

lib/rdoc/code_object/class_module.rb

@@ -34,8 +34,6 @@ class RDoc::ClassModule < RDoc::Context
 
   attr_accessor :comment_location
 
-  attr_accessor :diagram # :nodoc:
-
   ##
   # Class or module this constant is an alias for
 
@@ -109,7 +107,6 @@ def self.from_module class_type, mod
 
   def initialize(name, superclass = nil)
     @constant_aliases = []
-    @diagram          = nil
     @is_alias_for     = nil
     @name             = name
     @superclass       = superclass

lib/rdoc/code_object/top_level.rb

@@ -28,8 +28,6 @@ class RDoc::TopLevel < RDoc::Context
 
   attr_reader :classes_or_modules
 
-  attr_accessor :diagram # :nodoc:
-
   ##
   # The parser class that processed this file
 
@@ -46,7 +44,6 @@ def initialize absolute_name, relative_name = absolute_name
     @absolute_name = absolute_name
     @relative_name = relative_name
     @file_stat     = File.stat(absolute_name) rescue nil # HACK for testing
-    @diagram       = nil
     @parser        = nil
 
     @classes_or_modules = []