Method removeChild

packages/fairygui/src/core/GComponent.ts:113–119

* Remove a child * 移除子对象

(child: GObject, bDispose: boolean = false)

     * 移除子对象
     */
    public removeChild(child: GObject, bDispose: boolean = false): GObject {
        const index = this._children.indexOf(child);
        if (index !== -1) {
            return this.removeChildAt(index, bDispose);
        }
        return child;
    }

    /**
     * Remove child at index