Revert "Merge Ω-W2-T4: split the deferred FX-park drain by kind"

This reverts commit 70bd29dc89, reversing
changes made to 84afd1b545.

src/app/main.cpp

@@ -206,12 +206,9 @@ static void OnTimer()
     } else {
         // A mode switch applies its visibility/routing writes synchronously and
         // leaves the per-FX offline work here, so the new mode paints before the
-        // plugins move. Split by intent kind: restores whole (nothing may persist
-        // over a half-applied one), parks one FX per tick. Idle cost is one empty
-        // test each. Skipped on a load tick so the reapply's own intents defer one
-        // tick like any other switch's.
-        reasampler::drainDeferredFxRestores();
-        reasampler::tickDeferredFxParks();
+        // plugins unload. Idle cost is one empty test. Skipped on a load tick so
+        // the reapply's own intents defer one tick like any other switch's.
+        reasampler::drainDeferredFxParks();
     }
 
     reasampler::bankPanelRefresh();  // cheap fingerprint compare; no-op when unchanged/closed