filer conf: support json conf only

weed/filer/filer_conf.go

@@ -9,7 +9,6 @@ import (
 	"github.com/chrislusf/seaweedfs/weed/pb/filer_pb"
 	"github.com/chrislusf/seaweedfs/weed/util"
 	"github.com/golang/protobuf/jsonpb"
-	"github.com/golang/protobuf/proto"
 	"github.com/viant/ptrie"
 )
 
@@ -61,15 +60,7 @@ func (fc *FilerConf) LoadFromBytes(data []byte) (err error) {
 	conf := &filer_pb.FilerConf{}
 
 	if err := jsonpb.Unmarshal(bytes.NewReader(data), conf); err != nil {
-
-		err = proto.UnmarshalText(string(data), conf)
-		if err != nil {
-			glog.Errorf("unable to parse filer conf: %v", err)
-			// this is not recoverable
-			return nil
-		}
-
-		return nil
+		return err
 	}
 
 	return fc.doLoadConf(conf)