Remove jupyter notebook inside h1st codebase

[hiro-v]

Is your feature request related to a problem? Please describe.

• Jupyter notebook is heavy in terms of size
• If h1st want to have example, there should be h1st-example

Describe the solution you'd like

• Drop all jupyter notebook inside h1st codebase

Describe alternatives you've considered
No

Additional context

• It looks more lean in terms of code