Remove epsilon for scale as Three.js handles zero scale (#5404)

Co-authored-by: Noeri Huisman <[email protected]>

Author: mrxz

src/components/animation.js

@@ -376,12 +376,6 @@ module.exports.Component = registerComponent('animation', {
         return function (anim) {
           var value = anim.animatables[0].target;
 
-          if (data.property === PROP_SCALE) {
-            value.x = Math.max(0.0001, value.x);
-            value.y = Math.max(0.0001, value.y);
-            value.z = Math.max(0.0001, value.z);
-          }
-
           // For animation timeline.
           if (value.x === lastValue.x &&
               value.y === lastValue.y &&

src/components/scale.js

@@ -1,8 +1,5 @@
 var registerComponent = require('../core/component').registerComponent;
 
-// Avoids triggering a zero-determinant which makes object3D matrix non-invertible.
-var zeroScale = 0.00001;
-
 module.exports.Component = registerComponent('scale', {
   schema: {
     type: 'vec3',
@@ -12,10 +9,7 @@ module.exports.Component = registerComponent('scale', {
   update: function () {
     var data = this.data;
     var object3D = this.el.object3D;
-    var x = data.x === 0 ? zeroScale : data.x;
-    var y = data.y === 0 ? zeroScale : data.y;
-    var z = data.z === 0 ? zeroScale : data.z;
-    object3D.scale.set(x, y, z);
+    object3D.scale.set(data.x, data.y, data.z);
   },
 
   remove: function () {