remove an unused function.

* eval.c (rb_iterator_p): removed because nobody use it
  and not exposed by headers.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@60810 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

eval.c

@@ -842,17 +842,6 @@ rb_block_given_p(void)
     }
 }
 
-/*!  Determines if the current method is an interator.
- *
- * An alias of rb_block_given_p().
- * \ingroup defmethod
- */
-int
-rb_iterator_p(void)
-{
-    return rb_block_given_p();
-}
-
 VALUE rb_eThreadError;
 
 /*! Declares that the current method needs a block.