Remove RegExp.$input.

test/mjsunit/string-match.js

 // Copyright 2009 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 48 matching lines @@
   for (var i = 1; i <= 9; i++) {
     if (i <= captures.length) {
       assertEquals(captures[i - 1], RegExp["$" + i], name + "-capture-" + i);
     } else {
       assertEquals("", RegExp["$" + i], name + "-nocapture-" + i);
     }
   }
   assertEquals(undefined, RegExp.$10, name + "-nocapture-10");
 
   assertEquals(input, RegExp.input, name + "-input");
-  assertEquals(input, RegExp.$input, name + "-$input");
   assertEquals(input, RegExp.$_, name + "-$_");
 
   assertEquals(preMatch, RegExp["$`"], name + "-$`");
   assertEquals(preMatch, RegExp.leftContext, name + "-leftContex");
 
   assertEquals(postMatch, RegExp["$'"], name + "-$'");
   assertEquals(postMatch, RegExp.rightContext, name + "-rightContex");
 
   assertEquals(lastParen, RegExp["$+"], name + "-$+");
   assertEquals(lastParen, RegExp.lastParen, name + "-lastParen");
@@ skipping 60 matching lines @@
           [], 3, 5);
 
 
 // Atom, global
 
 var re_atomg = /an/g;
 
 testMatch("Global-Atom", stringSample, re_atomg,
           ["an", "an", "an", "an"],
           [], 25, 27);