Remove the June-11 mix demo set and its page

At Paul's direction: mix/ (six csound-era tracks, their state seeds, mix.m3u, and the served mix page) is gone from the live site. make-mix-page.js stays — it regenerates a mix page from any rendered playlist dir.

▶ Play it: Neon Fiscal Year → Benthic Patience → Silken Reentry — a constellation across three families — the path is the mix https://stellate.app/?genre=citypop&seed=1617&path=1530.6221,586.10667,1376.19565&xdur=0.056

95fe300 https://github.com/aboard-io/stellate/commit/95fe3001a837fabc910bde6e1859394e544cae7a