fix(git): add vendor in .gitignore

vendor/github.com/json-iterator/go/pool.go

@@ -1,42 +0,0 @@
-package jsoniter
-
-import (
-	"io"
-)
-
-// IteratorPool a thread safe pool of iterators with same configuration
-type IteratorPool interface {
-	BorrowIterator(data []byte) *Iterator
-	ReturnIterator(iter *Iterator)
-}
-
-// StreamPool a thread safe pool of streams with same configuration
-type StreamPool interface {
-	BorrowStream(writer io.Writer) *Stream
-	ReturnStream(stream *Stream)
-}
-
-func (cfg *frozenConfig) BorrowStream(writer io.Writer) *Stream {
-	stream := cfg.streamPool.Get().(*Stream)
-	stream.Reset(writer)
-	return stream
-}
-
-func (cfg *frozenConfig) ReturnStream(stream *Stream) {
-	stream.out = nil
-	stream.Error = nil
-	stream.Attachment = nil
-	cfg.streamPool.Put(stream)
-}
-
-func (cfg *frozenConfig) BorrowIterator(data []byte) *Iterator {
-	iter := cfg.iteratorPool.Get().(*Iterator)
-	iter.ResetBytes(data)
-	return iter
-}
-
-func (cfg *frozenConfig) ReturnIterator(iter *Iterator) {
-	iter.Error = nil
-	iter.Attachment = nil
-	cfg.iteratorPool.Put(iter)
-}