[cleanup] Remove dead code from Variable and simplify PatternRewriter slightly

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 cb197c9fbf98d1fb4cda0c4d9c277b93750c9c5d..4d82d1a7db5732de7bea9c2cad2edb829e656971 100644
--- a/src/parsing/pattern-rewriter.cc
+++ b/src/parsing/pattern-rewriter.cc
@@ -67,16 +67,6 @@ Expression* Parser::PatternRewriter::RewriteDestructuringAssignment(
 }
 
 
-bool Parser::PatternRewriter::IsAssignmentContext(PatternContext c) const {
-  return c == ASSIGNMENT || c == ASSIGNMENT_INITIALIZER;
-}
-
-
-bool Parser::PatternRewriter::IsBindingContext(PatternContext c) const {
-  return c == BINDING || c == INITIALIZER;
-}
-
-
 Parser::PatternRewriter::PatternContext
 Parser::PatternRewriter::SetAssignmentContextIfNeeded(Expression* node) {
   PatternContext old_context = context();