Remove double call to normalizeTimingInput()

Author: alancutter

src/timing-utilities.js

@@ -45,7 +45,7 @@
       this['_' + member] = value;
       if (this._effect) {
         this._effect._timingInput[member] = value;
-        this._effect._timing = shared.normalizeTimingInput(shared.normalizeTimingInput(this._effect._timingInput));
+        this._effect._timing = shared.normalizeTimingInput(this._effect._timingInput);
         this._effect.activeDuration = shared.calculateActiveDuration(this._effect._timing);
         if (this._effect._animation) {
           this._effect._animation._rebuildUnderlyingAnimation();