[KYUUBI #7005] [DOC] Remove empty page "Getting Started with Jupyter Lap"

### 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>

docs/quick_start/quick_start_with_jupyter.md

@@ -1,19 +0,0 @@
-<!--
-- Licensed to the Apache Software Foundation (ASF) under one or more
-- contributor license agreements.  See the NOTICE file distributed with
-- this work for additional information regarding copyright ownership.
-- The ASF licenses this file to You under the Apache License, Version 2.0
-- (the "License"); you may not use this file except in compliance with
-- the License.  You may obtain a copy of the License at
--
--   http://www.apache.org/licenses/LICENSE-2.0
--
-- Unless required by applicable law or agreed to in writing, software
-- distributed under the License is distributed on an "AS IS" BASIS,
-- WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-- See the License for the specific language governing permissions and
-- limitations under the License.
--->
-
-# Getting Started with Jupyter Lap
-