try to fix an issue with sanity/insanity interactions

src/main/java/net/fretux/mindmotion/player/TempoCapability.java

@@ -47,17 +47,11 @@ public class TempoCapability implements ITempo {
     }
 
     public void setBonusMaxTempo(float bonusMaxTempo) {
-        int oldMax = getMaxTempo();
         this.bonusMaxTempo = Math.max(0f, bonusMaxTempo);
-        int newMax = getMaxTempo();
-        if (oldMax > 0) {
-            float pct = (float) tempo / (float) oldMax;
-            tempo = Math.round(pct * newMax);
-        }
-        setTempo(tempo);
+        setTempo(this.tempo);
     }
 
     public float getBonusMaxTempo() {
         return bonusMaxTempo;
     }
-}
+}