Revert of Add errors for declarations which conflict with catch parameters.

test/mjsunit/es6/catch-parameter-redeclaration.js

Index: test/mjsunit/es6/catch-parameter-redeclaration.js
diff --git a/test/mjsunit/es6/catch-parameter-redeclaration.js b/test/mjsunit/es6/catch-parameter-redeclaration.js
deleted file mode 100644
index 0d6ce061f8c526538eda91e3f24a3f81fd301ad4..0000000000000000000000000000000000000000
--- a/test/mjsunit/es6/catch-parameter-redeclaration.js
+++ /dev/null
@@ -1,104 +0,0 @@
-// Copyright 2016 the V8 project authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-function checkIsRedeclarationError(code) {
-  try {
-    eval(`
-checkIsRedeclarationError : {
-  break checkIsRedeclarationError;
-${code}
-}
-`);
-    assertUnreachable();
-  } catch(e) {
-    assertInstanceof(e, SyntaxError );
-    assertTrue( e.toString().indexOf("has already been declared") >= 0 );
-  }
-}
-
-function checkIsNotRedeclarationError(code) {
-  assertDoesNotThrow(()=>eval(`
-checkIsNotRedeclarationError_label : {
-  break checkIsNotRedeclarationError_label;
-${code}
-}
-`));
-}
-
-
-let lexical_e = [
-  'let e',
-  'let {e} = 0',
-  'let [e] = 0',
-  'let {f:e} = 0',
-  'let [[[], e]] = 0',
-  'const e = 0',
-  'const {e} = 0',
-  'const [e] = 0',
-  'const {f:e} = 0',
-  'const [[[], e]] = 0',
-  'function e(){}',
-  'function* e(){}',
-];
-
-let not_lexical_e = [
-  'var e',
-  'var {e} = 0',
-  'let {} = 0',
-  'let {e:f} = 0',
-  '{ function e(){} }'
-];
-
-// Check that lexical declarations cannot override a simple catch parameter
-for (let declaration of lexical_e) {
-  checkIsRedeclarationError(`
-try {
-  throw 0;
-} catch(e) {
-  ${declaration}
-}
-`);
-}
-
-// Check that lexical declarations cannot override a complex catch parameter
-for (let declaration of lexical_e) {
-  checkIsRedeclarationError(`
-try {
-  throw 0;
-} catch({e}) {
-  ${declaration}
-}
-`);
-}
-
-// Check that non-lexical declarations can override a simple catch parameter
-for (let declaration of not_lexical_e) {
-  checkIsNotRedeclarationError(`
-try {
-  throw 0;
-} catch(e) {
-  ${declaration}
-}
-`);
-}
-
-// Check that the above error does not occur if a declaration scope is between
-// the catch and the loop.
-for (let declaration of lexical_e) {
-  checkIsNotRedeclarationError(`
-try {
-  throw 0;
-} catch(e) {
-  (()=>{${declaration}})();
-}
-`);
-
-  checkIsNotRedeclarationError(`
-try {
-  throw 0;
-} catch(e) {
-  (function(){${declaration}})();
-}
-`);
-}