diff --git a/src/env-inl.h b/src/env-inl.h
index 2a560f71d24bc1..6386981215a00b 100644
--- a/src/env-inl.h
+++ b/src/env-inl.h
@@ -957,22 +957,6 @@ inline void Environment::SetTemplateMethod(v8::Local<v8::FunctionTemplate> that,
   t->SetClassName(name_string);  // NODE_SET_METHOD() compatibility.
 }
 
-inline void Environment::SetTemplateMethodNoSideEffect(
-    v8::Local<v8::FunctionTemplate> that,
-    const char* name,
-    v8::FunctionCallback callback) {
-  v8::Local<v8::FunctionTemplate> t =
-      NewFunctionTemplate(callback, v8::Local<v8::Signature>(),
-                          v8::ConstructorBehavior::kAllow,
-                          v8::SideEffectType::kHasNoSideEffect);
-  // kInternalized strings are created in the old space.
-  const v8::NewStringType type = v8::NewStringType::kInternalized;
-  v8::Local<v8::String> name_string =
-      v8::String::NewFromUtf8(isolate(), name, type).ToLocalChecked();
-  that->Set(name_string, t);
-  t->SetClassName(name_string);  // NODE_SET_METHOD() compatibility.
-}
-
 void Environment::AddCleanupHook(void (*fn)(void*), void* arg) {
   auto insertion_info = cleanup_hooks_.emplace(CleanupHookCallback {
     fn, arg, cleanup_hook_counter_++
diff --git a/src/env.h b/src/env.h
index 30b7c7343572d6..83585ceb99846a 100644
--- a/src/env.h
+++ b/src/env.h
@@ -889,10 +889,6 @@ class Environment {
   inline void SetProtoMethodNoSideEffect(v8::Local<v8::FunctionTemplate> that,
                                          const char* name,
                                          v8::FunctionCallback callback);
-  inline void SetTemplateMethodNoSideEffect(
-      v8::Local<v8::FunctionTemplate> that,
-      const char* name,
-      v8::FunctionCallback callback);
 
   void BeforeExit(void (*cb)(void* arg), void* arg);
   void RunBeforeExitCallbacks();