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

This reverts commit c1fe1bf2dc.

tools/changelog.json

@@ -1,13 +1,6 @@
 {
   "_about": "The site's changelog, newest first. Versions follow Semantic Versioning (MAJOR.MINOR.PATCH), dates ISO 8601 (DIN EN 28601). make_builder_data.py adds every mod's current version from its module and writes assets/versions.js.",
   "site": [
-    {
-      "version": "1.10.0",
-      "date": "2026-10-21",
-      "changes": [
-        "New mod: BPM ×2 / ÷2 (bpmhalfdouble), the track's BPM and beat grid doubled or halved from the deck, kept on the USB stick."
-      ]
-    },
     {
       "version": "1.9.0",
       "date": "2026-10-21",
@@ -396,15 +389,6 @@
           "The big waveform 624 columns wide instead of 536, to the right edge; the extra columns are ahead of the playing position. The ZOOM/GRID wheel replaced by a grey ZOOM / GRID box over the BPM display."
         ]
       }
-    ],
-    "bpmhalfdouble": [
-      {
-        "version": "0.2.0",
-        "date": "2026-10-21",
-        "changes": [
-          "TAG TRACK held + CALL ◀ / ▶ halves or doubles the loaded track's BPM and beat grid; the track is loaded again with it, so display, beat ticks, bars, quantize and Pro DJ Link follow. Kept on the USB stick in PIONEER/PIONAARR.BPM. Results under 60 or over 240 BPM refused."
-        ]
-      }
     ]
   }
 }