Remove --harmony-scoping flag.

src/scanner.h

 // Copyright 2011 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.
 
 // Features shared by parsing and pre-parsing scanners.
 
 #ifndef V8_SCANNER_H_
 #define V8_SCANNER_H_
 
 #include "src/allocation.h"
@@ skipping 426 matching lines @@
 
   // Returns the value of the last smi that was scanned.
   int smi_value() const { return smi_value_; }
 
   // Seek forward to the given position.  This operation does not
   // work in general, for instance when there are pushed back
   // characters, but works for seeking forward until simple delimiter
   // tokens, which is what it is used for.
   void SeekForward(int pos);
 
-  bool HarmonyScoping() const {
-    return harmony_scoping_;
-  }
-  void SetHarmonyScoping(bool scoping) {
-    harmony_scoping_ = scoping;
-  }
   bool HarmonyModules() const {
     return harmony_modules_;
   }
   void SetHarmonyModules(bool modules) {
     harmony_modules_ = modules;
   }
   bool HarmonyNumericLiterals() const {
     return harmony_numeric_literals_;
   }
   void SetHarmonyNumericLiterals(bool numeric_literals) {
@@ skipping 275 matching lines @@
   // One Unicode character look-ahead; c0_ < 0 at the end of the input.
   uc32 c0_;
 
   // Whether there is a line terminator whitespace character after
   // the current token, and  before the next. Does not count newlines
   // inside multiline comments.
   bool has_line_terminator_before_next_;
   // Whether there is a multi-line comment that contains a
   // line-terminator after the current token, and before the next.
   bool has_multiline_comment_before_next_;
-  // Whether we scan 'let' as a keyword for harmony block-scoped let bindings.
-  bool harmony_scoping_;
   // Whether we scan 'module', 'import', 'export' as keywords.
   bool harmony_modules_;
   // Whether we scan 0o777 and 0b111 as numbers.
   bool harmony_numeric_literals_;
   // Whether we scan 'class', 'extends', 'static' and 'super' as keywords.
   bool harmony_classes_;
   // Whether we scan TEMPLATE_SPAN and TEMPLATE_TAIL
   bool harmony_templates_;
   // Whether we allow \u{xxxxx}.
   bool harmony_unicode_;
 };
 
 } }  // namespace v8::internal
 
 #endif  // V8_SCANNER_H_