Partial revert of rest parameter desugaring.

test/test262/test262.status

 # Copyright 2011 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 685 matching lines @@
   'language/expressions/this/11.1.1-1gs': [SKIP],
   'language/identifier-resolution/S10.2.2_A1_T5': [SKIP],
   'language/identifier-resolution/S10.2.2_A1_T6': [SKIP],
   'language/identifier-resolution/S10.2.2_A1_T7': [SKIP],
   'language/identifier-resolution/S10.2.2_A1_T8': [SKIP],
   'language/identifier-resolution/S10.2.2_A1_T9': [SKIP],
   'language/object-literal/concise-generator': [SKIP],
   'language/object-literal/getter': [SKIP],
   'language/object-literal/method': [SKIP],
   'language/object-literal/setter': [SKIP],
+  'language/rest-parameters/arrow-function': [SKIP],
+  'language/rest-parameters/no-alias-arguments': [SKIP],
+  'language/rest-parameters/rest-index': [SKIP],
+  'language/rest-parameters/rest-parameters-apply': [SKIP],
+  'language/rest-parameters/rest-parameters-call': [SKIP],
+  'language/rest-parameters/rest-parameters-produce-an-array': [SKIP],
   'language/rest-parameters/with-new-target': [SKIP],
   'language/statements/do-while/S12.6.1_A4_T5': [SKIP],
   'language/statements/function/S13.2.2_A18_T2': [SKIP],
   'language/statements/function/S13.2.2_A19_T1': [SKIP],
   'language/statements/function/S13.2.2_A19_T2': [SKIP],
   'language/statements/function/S13.2.2_A19_T3': [SKIP],
   'language/statements/function/S13.2.2_A19_T4': [SKIP],
   'language/statements/function/S13.2.2_A19_T5': [SKIP],
   'language/statements/function/S13.2.2_A19_T6': [SKIP],
   'language/statements/function/S13.2.2_A19_T7': [SKIP],
   'language/statements/function/S13.2.2_A19_T8': [SKIP],
   'language/statements/while/S12.6.2_A4_T5': [SKIP],
   'language/block-scope/leave/nested-block-let-declaration-only-shadows-outer-parameter-value-1': [SKIP],
   'language/block-scope/leave/nested-block-let-declaration-only-shadows-outer-parameter-value-2': [SKIP],
   'language/block-scope/leave/verify-context-in-labelled-block': [SKIP],
   'language/expressions/object/method-definition/name-prop-name-yield-expr': [SKIP],
   'language/statements/function/S13.2.2_A18_T1': [SKIP],
   'language/statements/function/S13.2.2_A17_T2': [SKIP],
   'language/statements/function/S13.2.2_A17_T3': [SKIP],
 }],  # ignition == True
 
 ['ignition == True and (arch == arm or arch == arm64)', {
   'built-ins/encodeURI*': [SKIP],
   'intl402/9.2.2': [SKIP],
 }],  # ignition == True and (arch == arm or arch == arm64)
 
 ]