[SPARK-54378][SQL] Remove CreateXmlParser.scala from catalyst module

### What changes were proposed in this pull request?
This pr removes the unused code `CreateXmlParser.scala` from the `catalyst` module, as it has never been used since its introduction.

### Why are the changes needed?
Code Cleanup.

### Does this PR introduce _any_ user-facing change?
No

### How was this patch tested?
Pass Github Actions

### Was this patch authored or co-authored using generative AI tooling?
No

Closes #53094 from LuciferYang/remove-CreateXmlParser.

Authored-by: yangjie01 <yangjie01@baidu.com>
Signed-off-by: yangjie01 <yangjie01@baidu.com>

Author: LuciferYang