去除左下角的logo只需在你的页面上加上如下css
.BMap_cpyCtrl {display: none;}.anchorBL {display: none;
即:
<style type="text/css">body, html,#allmap {width: 100%;height: 100%;overflow: hidden;margin:0;font-family:"微软雅黑";}.BMap_cpyCtrl {display: none;}.anchorBL {display: none;}</style>
加上上述css样式后,效果如下: