streaming docs: simplify to use Panel instead of Bokeh

[sophiamyang]

This page https://hvplot.holoviz.org/user_guide/Streaming.html shows deployment using Bokeh, can we use Panel for the deployment? Thanks!

[maximlt]

I assume so!

[philippjfr]

Yes, it was probably written before Panel existed.

[droumis]

do we want to add a panel deployment section, or have it replace the current bokeh deployment?

[sophiamyang]

I think it's better to replace it.