Remove unused attributes (#1292)

I think these attribute declarations are not necessary. Please review by
commits.

Author: st0012

lib/rdoc/code_object/any_method.rb

@@ -29,10 +29,6 @@ class RDoc::AnyMethod < RDoc::MethodAttr
   # The section title of the method (if defined in a C file via +:category:+)
   attr_accessor :section_title
 
-  # Parameters for this method
-
-  attr_accessor :params
-
   ##
   # If true this method uses +super+ to call a superclass version
 

lib/rdoc/code_object/method_attr.rb

@@ -63,12 +63,6 @@ class RDoc::MethodAttr < RDoc::CodeObject
 
   attr_reader :arglists
 
-  ##
-  # Pretty parameter list for this method
-
-  attr_reader :param_seq
-
-
   ##
   # Creates a new MethodAttr from token stream +text+ and method or attribute
   # name +name+.
@@ -91,7 +85,6 @@ def initialize text, name
     @arglists     = nil
     @block_params = nil
     @call_seq     = nil
-    @param_seq    = nil
     @params       = nil
   end