src: delete unused method SetTemplateMethod

PR-URL: #26451
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de>

src/env-inl.h

@@ -942,21 +942,6 @@ inline void Environment::SetProtoMethodNoSideEffect(
   t->SetClassName(name_string);  // NODE_SET_PROTOTYPE_METHOD() compatibility.
 }
 
-inline void Environment::SetTemplateMethod(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::kHasSideEffect);
-  // 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_++

src/env.h

@@ -878,9 +878,6 @@ class Environment {
   inline void SetProtoMethod(v8::Local<v8::FunctionTemplate> that,
                              const char* name,
                              v8::FunctionCallback callback);
-  inline void SetTemplateMethod(v8::Local<v8::FunctionTemplate> that,
-                                const char* name,
-                                v8::FunctionCallback callback);
 
   // Safe variants denote the function has no side effects.
   inline void SetMethodNoSideEffect(v8::Local<v8::Object> that,