src: remove unused async hooks methods

Backport-PR-URL: #18179
PR-URL: #17757
Reviewed-By: Anatoli Papirovski <apapirovski@mac.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Daniel Bevenius <daniel.bevenius@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de>
Reviewed-By: Jon Moss <me@jonathanmoss.me>
Reviewed-By: Yuta Hiroto <hello@about-hiroppy.com>
Reviewed-By: Timothy Gu <timothygu99@gmail.com>
Reviewed-By: vdeturckheim <vlad2t@hotmail.com>

src/env-inl.h

@@ -117,19 +117,11 @@ Environment::AsyncHooks::fields() {
   return fields_;
 }
 
-inline int Environment::AsyncHooks::fields_count() const {
-  return kFieldsCount;
-}
-
 inline AliasedBuffer<double, v8::Float64Array>&
 Environment::AsyncHooks::async_id_fields() {
   return async_id_fields_;
 }
 
-inline int Environment::AsyncHooks::async_id_fields_count() const {
-  return kUidFieldsCount;
-}
-
 inline v8::Local<v8::String> Environment::AsyncHooks::provider_string(int idx) {
   return providers_[idx].Get(isolate_);
 }

src/env.h

@@ -408,10 +408,7 @@ class Environment {
     AsyncHooks() = delete;
 
     inline AliasedBuffer<uint32_t, v8::Uint32Array>& fields();
-    inline int fields_count() const;
-
     inline AliasedBuffer<double, v8::Float64Array>& async_id_fields();
-    inline int async_id_fields_count() const;
 
     inline v8::Local<v8::String> provider_string(int idx);