### Why are the changes needed?
The PR resolves the following warning message:
```
../kyuubi/docs/quick_start/quick_start_with_jupyter.md: WARNING: document isn't included in any toctree
```
It removes the empty page `Getting Started with Jupyter Lap` which is also not presented in the documentation menu.
### How was this patch tested?
Built documentation locally and checked there are no warning message anymore.
### Was this patch authored or co-authored using generative AI tooling?
No
Closes#7005 from dnskr/remove-empty-getting-started-with-jupyter-lap.
Closes#7005
030fb3598 [dnskr] [DOC] Remove empty page "Getting Started with Jupyter Lap"
Authored-by: dnskr <dnskrv88@gmail.com>
Signed-off-by: dnskr <dnskrv88@gmail.com>
e2efe934e1