Remove CONST_LEGACY VariableMode

src/parsing/pattern-rewriter.cc

Index: src/parsing/pattern-rewriter.cc
diff --git a/src/parsing/pattern-rewriter.cc b/src/parsing/pattern-rewriter.cc
index 310c277fed40fbfa4d16b219cb51fe56ceacc75b..3cf0992c1014aa9e6be1ab89b8c1c7db7d26aa89 100644
--- a/src/parsing/pattern-rewriter.cc
+++ b/src/parsing/pattern-rewriter.cc
@@ -139,13 +139,6 @@ void Parser::PatternRewriter::VisitVariableProxy(VariableProxy* pattern) {
   // which the variable or constant is declared. Only function variables have
   // an initial value in the declaration (because they are initialized upon
   // entering the function).
-  //
-  // If we have a legacy const declaration, in an inner scope, the proxy
-  // is always bound to the declared variable (independent of possibly
-  // surrounding 'with' statements).
-  // For let/const declarations in harmony mode, we can also immediately
-  // pre-resolve the proxy because it resides in the same scope as the
-  // declaration.
   const AstRawString* name = pattern->raw_name();
   VariableProxy* proxy = parser_->NewUnresolved(name, descriptor_->mode);
   Declaration* declaration = factory()->NewVariableDeclaration(