Remove unused Scope::inside_with() accessor

src/ast/scopes.h

Index: src/ast/scopes.h
diff --git a/src/ast/scopes.h b/src/ast/scopes.h
index dec99933bae92d03d94a8b08c8ee2bf74b802f03..193bd083209d14dc25f92cc4c40668d45f9ed645 100644
--- a/src/ast/scopes.h
+++ b/src/ast/scopes.h
@@ -321,9 +321,6 @@ class Scope: public ZoneObject {
   bool asm_module() const { return asm_module_; }
   bool asm_function() const { return asm_function_; }
 
-  // Is this scope inside a with statement.
-  bool inside_with() const { return scope_inside_with_; }
-
   // Does this scope access "super" property (super.foo).
   bool uses_super_property() const { return scope_uses_super_property_; }
   // Does this scope have the potential to execute declarations non-linearly?