Updated builds.

build/three.js

@@ -22996,31 +22996,19 @@
 	 * @author ikerr / http://verold.com
 	 */
 
-	function Bone( skin ) {
+	function Bone() {
 
 		Object3D.call( this );
 
 		this.type = 'Bone';
 
-		this.skin = skin;
-
 	}
 
 	Bone.prototype = Object.assign( Object.create( Object3D.prototype ), {
 
 		constructor: Bone,
 
-		isBone: true,
-
-		copy: function ( source ) {
-
-			Object3D.prototype.copy.call( this, source );
-
-			this.skin = source.skin;
-
-			return this;
-
-		}
+		isBone: true
 
 	} );
 
@@ -23055,7 +23043,7 @@
 
 				gbone = this.geometry.bones[ b ];
 
-				bone = new Bone( this );
+				bone = new Bone();
 				bones.push( bone );
 
 				bone.name = gbone.name;

build/three.modules.js

@@ -22990,31 +22990,19 @@ Object.assign( Skeleton.prototype, {
  * @author ikerr / http://verold.com
  */
 
-function Bone( skin ) {
+function Bone() {
 
 	Object3D.call( this );
 
 	this.type = 'Bone';
 
-	this.skin = skin;
-
 }
 
 Bone.prototype = Object.assign( Object.create( Object3D.prototype ), {
 
 	constructor: Bone,
 
-	isBone: true,
-
-	copy: function ( source ) {
-
-		Object3D.prototype.copy.call( this, source );
-
-		this.skin = source.skin;
-
-		return this;
-
-	}
+	isBone: true
 
 } );
 
@@ -23049,7 +23037,7 @@ function SkinnedMesh( geometry, material, useVertexTexture ) {
 
 			gbone = this.geometry.bones[ b ];
 
-			bone = new Bone( this );
+			bone = new Bone();
 			bones.push( bone );
 
 			bone.name = gbone.name;