backup-client: do not start garbage collection after backup

src/bin/backup-client.rs

@@ -55,7 +55,7 @@ fn backup_file(param: Value, _info: &ApiMethod) -> Result<Value, Error> {
         index.close()?; // commit changes
     }
 
-    datastore.garbage_collection()?;
+    //datastore.garbage_collection()?;
 
     let idx = datastore.open_image_reader(target)?;
     idx.print_info();