src: remove obsolete NoArrayBufferZeroFillScope

No longer used or necessary

PR-URL: #56913
Reviewed-By: Michaël Zasso <targos@protonmail.com>
Reviewed-By: Chengzhong Wu <legendecas@gmail.com>
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Antoine du Hamel <duhamelantoine1995@gmail.com>
Reviewed-By: Xuguang Mei <meixuguang@gmail.com>

Author: jasnell

src/env-inl.h

@@ -44,16 +44,6 @@
 
 namespace node {
 
-NoArrayBufferZeroFillScope::NoArrayBufferZeroFillScope(
-    IsolateData* isolate_data)
-    : node_allocator_(isolate_data->node_allocator()) {
-  if (node_allocator_ != nullptr) node_allocator_->zero_fill_field()[0] = 0;
-}
-
-NoArrayBufferZeroFillScope::~NoArrayBufferZeroFillScope() {
-  if (node_allocator_ != nullptr) node_allocator_->zero_fill_field()[0] = 1;
-}
-
 inline v8::Isolate* IsolateData::isolate() const {
   return isolate_;
 }

src/env.h

@@ -112,19 +112,6 @@ class ModuleWrap;
 class Environment;
 class Realm;
 
-// Disables zero-filling for ArrayBuffer allocations in this scope. This is
-// similar to how we implement Buffer.allocUnsafe() in JS land.
-class NoArrayBufferZeroFillScope {
- public:
-  inline explicit NoArrayBufferZeroFillScope(IsolateData* isolate_data);
-  inline ~NoArrayBufferZeroFillScope();
-
- private:
-  NodeArrayBufferAllocator* node_allocator_;
-
-  friend class Environment;
-};
-
 struct IsolateDataSerializeInfo {
   std::vector<SnapshotIndex> primitive_values;
   std::vector<PropInfo> template_values;