Revert "site 1.10.0: BPM x2 / /2 (bpmhalfdouble) in the builder, docs and Mods page"

This reverts commit c1fe1bf2dc.

builder/ui.js

@@ -29,12 +29,10 @@
       what: 'BROWSE held: SEARCH; BROWSE twice: the list the playing track came from, the track picked.' },
     { id: 'usbautoload', name: 'USB auto load', by: 'ours', state: 'experimental',
       what: 'MY SETTINGS on a stick loaded the moment the player finds them. UTILITY › USB AUTO LOAD.' },
-    { id: 'bpmhalfdouble', name: 'BPM ×2 / ÷2', by: 'ours', state: 'experimental', needs: 'quicksearch',
-      what: 'TAG TRACK held + CALL ◀ halves, CALL ▶ doubles the track’s BPM and beat grid (85 → 170), as rekordbox does; kept on the USB stick.' },
     { id: 'wide_waveform', name: 'Wide waveform', by: 'ours', state: 'experimental',
       what: 'The big waveform runs on to the right edge where the ZOOM/GRID wheel was; a small grey box over the BPM display says ZOOM or GRID.' },
     { id: 'credit', name: 'Boot text', by: 'ours', state: 'stable',
-      what: 'The boot screen says “Pionaarr Mods 1.10.0” instead of “Ver 1.31”.' }
+      what: 'The boot screen says “Pionaarr Mods 1.9.0” instead of “Ver 1.31”.' }
   ];
   var chosen = {};
   MODS.forEach(function (m) { chosen[m.id] = true; });     // every mod ticked at the start