Remove now-unused TailCallExpressionProduction from ExpressionClassifier

src/parsing/parser-base.h

 // Copyright 2012 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.
 
 #ifndef V8_PARSING_PARSER_BASE_H
 #define V8_PARSING_PARSER_BASE_H
 
 #include "src/ast/ast.h"
 #include "src/ast/scopes.h"
 #include "src/bailout-reason.h"
@@ skipping 2704 matching lines @@
   // assignment pattern errors if the parsed expression is more complex.
   if (IsValidReferenceExpression(expression)) {
     productions &= ~ExpressionClassifier::AssignmentPatternProduction;
   }
 
   const bool is_destructuring_assignment =
       IsValidPattern(expression) && peek() == Token::ASSIGN;
   if (is_destructuring_assignment) {
     // This is definitely not an expression so don't accumulate
     // expression-related errors.
-    productions &= ~(ExpressionClassifier::ExpressionProduction |
-                     ExpressionClassifier::TailCallExpressionProduction);
+    productions &= ~ExpressionClassifier::ExpressionProduction;
   }
 
   if (!Token::IsAssignmentOp(peek())) {
     // Parsed conditional expression only (no assignment).
     // Pending non-pattern expressions must be merged.
     impl()->Accumulate(productions);
     return expression;
   } else {
     // Pending non-pattern expressions must be discarded.
     impl()->Accumulate(productions, false);
@@ skipping 2718 matching lines @@
     has_seen_constructor_ = true;
     return;
   }
 }
 
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_PARSING_PARSER_BASE_H