src: remove unused variable in node_http2.cc

PR-URL: #26395
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: James M Snell <jasnell@gmail.com>

src/node_http2.cc

@@ -1283,9 +1283,6 @@ void Http2Session::HandleHeadersFrame(const nghttp2_frame* frame) {
 
   std::vector<nghttp2_header> headers(stream->move_headers());
 
-  Local<String> name_str;
-  Local<String> value_str;
-
   // The headers are passed in above as a queue of nghttp2_header structs.
   // The following converts that into a JS array with the structure:
   // [name1, value1, name2, value2, name3, value3, name3, value4] and so on.