Remove Trackster, Circster, Sweepster and Phyloviz Makos

[guerler]

This PR removes the legacy mako, js-code of Trackster, Circster, Sweepster and Phyloviz built-in visualizations. This is a critical prerequisite for moving forward with the overall client modernization in regard to backbone-based code and legacy makos.

How to test the changes?

(Select all options that apply)

• I've included appropriate automated tests.
• This is a refactoring of components with existing test coverage.
• Instructions for manual testing are as follows:
  1. [add testing steps and prerequisites here if you didn't write automated tests covering all your changes]

License

• I agree to license these and all my past contributions to the core galaxy codebase under the MIT license.

[bgruening]

I think Trackster, Circster, Sweepster have been discussed many times in various GCCs to be removed. Thanks @guerler for taking the lead here. 👍
I'm not sure about Phyloviz. Do we know if this is used? Do we have a replacement?

@nekrut I remember you have at least participated in those discussions and have been in favor of removing Trackster in favor of other Genome Browsers.

[mvdbeek]

I also like this a lot, but maybe the order should be addition of embedded IGV (or jbrowse) first before we remove trackster ?

[nekrut]

100% REMOVE!

[guerler]

Closed in favor of #17415