Program Tree Editor lets you delete nodes directly. You can do it by selecting a node using advanced caret movement and press the "Delete" key.

You press Delete

If a node has sub nodes they will deleted too. So you will delete nodes very fast notwithstanding on count of strings in node, because you do not need search the last closing tag or brace in nodes manually. See also: How to delete sub nodes?

You press Delete

Moreover, you can select a few nodes and delete them all. See also: How to select nodes?

You press Delete