Cleaning up this reposiotry

[negin513]

Hello Everyone,
We need to update and maintain this repository appropriately. Currently, we have identified a few items that should not be in the repository, including at least the following:

• The .Rproj directory
• NEON-visualization.Rproj
• Conflicting requirement.txt and yml files.
• The sample_data, which is no longer needed.

I am uncertain about the purpose of some directories and files in the repository, such as the .Rproj directory and files.

However, from my understanding the .Rproj file is typically used as a project file by the R programming language in the RStudio integrated development environment (IDE).
If it is not necessary for our repository, I plan to remove it to avoid any potential confusion or issues.

[negin513]

The bokeh html files here are not needed any more but we can keep them. They were original used fo embedding in NEON website.

[negin513]

Another one: there is a bokeh-notebooks folder under notebooks not needed any more.