Remove redundant files that are now in the tree-build repo

[davidebbo]

As discussed with @lentinj in OneZoom/tree-build#44, there are some files like make_js_treefiles.py that still exist in OZtree, even though this is now done from tree-build. There may be others.

We should go through and clean them up to reduce confusion. @hyanwong I think you had started some round of clean up along those lines earlier?

[lentinj]

There's the enticingly-named #687 (Remove treebuild), but looks like Yan got side-tracked.

./OZprivate/ServerScripts/SQL/create_db_indexes.sql and OZprivate/ServerScripts/Utilities/partial_install.py should definitely stay in OZtree. The rest is probably unused

[hyanwong]

There are a number of files like the images and names querying script, and the IUCN-extraction & picProcess scripts that are designed to run on an OZ server that can write to a DB, so I think these can be kept for the time being. However, many other files can be removed. I've done this in #816. I might have missed some, however.

[hyanwong]

I'm closing this for the time being. We should remember to remove any extra files (especially in https://github.com/OneZoom/OZtree/tree/main/OZprivate/ServerScripts/Utilities) that have been moved (or whose functionality has been moved) too the tree-build repo.