Remove legacy aspire/aspire code

[garrettwrong]

Created tag legacy_aspire to mark a commit before removal. Using that commit it should be possible to create a branch later, or otherwise recover the code in the state it was in today.

Removes the src/aspire/aspire directory, and related doc page.

Also includes a minor typo fix in conf.py I found when manually rebuilding the docs.

[janden]

We should also remove code that depends on aspire.aspire. From what I understand, this should be restricted to aspire.commands.aspire, but there may be others.

[garrettwrong]

Gotcha, yeah, I must have missed it because there were no tests... Will do.

[garrettwrong]

Updated. Besides a historical comment (im_translate2) grep for aspire.aspire is clean now. I should have checked the first time.

We will be able to bring back something similar or refresh this code, but I'm hoping we can keep it more consistent and constantly/automatically tested this time its integrated so it doesn't diverge as much...

[janden]

Sorry I was unclear. It's only the aspire.py file that needs to be removed. From what I understand, the others (apple.py, denoise.py, etc.) still work. We will probably want to rework the interface at some point, but they're not broken, so let's keep them.

[garrettwrong]

Okay, sure, I'll need to put the quickstart back then. I should have it ready in a few. Thanks

[garrettwrong]

Restored the quickstart docs, rebased. Sorry for the noise.