[filer] fix return 204 for DELETE on entry not found (#6023)

fix return 204 for DELETE on entry not found

weed/server/filer_server_handlers_write.go

@@ -217,11 +217,7 @@ func (fs *FilerServer) DeleteHandler(w http.ResponseWriter, r *http.Request) {
 	}
 
 	err := fs.filer.DeleteEntryMetaAndData(context.Background(), util.FullPath(objectPath), isRecursive, ignoreRecursiveError, !skipChunkDeletion, false, nil, 0)
-	if err != nil {
-		if err == filer_pb.ErrNotFound {
-			writeJsonQuiet(w, r, http.StatusNoContent, nil)
-			return
-		}
+	if err != nil && err != filer_pb.ErrNotFound {
 		glog.V(1).Infoln("deleting", objectPath, ":", err.Error())
 		writeJsonError(w, r, http.StatusInternalServerError, err)
 		return