--- a/js/src/tests/browser.js
+++ b/js/src/tests/browser.js
@@ -338,20 +338,16 @@ function jsTestDriverBrowserInit()
     else if (properties.test.match(/^js1_7/))
     {
       properties.version = '1.7';
     }
     else if (properties.test.match(/^js1_8/))
     {
       properties.version = '1.8';
     }
-    else if (properties.test.match(/^ecma_6\/LexicalEnvironment/))
-    {
-      properties.version = '1.8';
-    }
   }
 
   // default to language=type;text/javascript. required for
   // reftest style manifests.
   if (!properties.language)
   {
     properties.language = 'type';
     properties.mimetype = 'text/javascript';

deleted file mode 100644

deleted file mode 100644
--- a/js/src/tests/ecma_6/LexicalEnvironment/shell.js
+++ /dev/null
@@ -1,5 +0,0 @@
-// NOTE: This only turns on 1.8.5 in shell builds.  The browser requires the
-//       futzing in js/src/tests/browser.js (which only turns on 1.8, the most
-//       the browser supports).
-if (typeof version != 'undefined')
-  version(185);

deleted file mode 100644
--- a/js/src/tests/ecma_6/LexicalEnvironment/with-global-ignores-global-let-variables.js
+++ /dev/null
@@ -1,18 +0,0 @@
-// |reftest| fails-if(Function("try{Function('let\x20x=5;');return(1,eval)('let\x20x=3;\\'x\\'\x20in\x20this');}catch(e){return(true);}")()) -- needs bug 589199 fix (top-level let not same as var)
-// Any copyright is dedicated to the Public Domain.
-// http://creativecommons.org/licenses/publicdomain/
-
-let v = "global-v";
-
-function f(v, global)
-{
-  with (global)
-    return v;
-}
-
-assertEq(f("argument-v", this), "argument-v");
-
-if (typeof reportCompare === "function")
-  reportCompare(true, true);
-
-print("Tests complete");