message: fix(svg): remove unused code and import.
diff: @@ -7,7 +7,6 @@ import Definable from './Definable';
  import * as zrUtil from '../../core/util';
  import Displayable from '../../graphic/Displayable';
  import {PatternObject} from '../../graphic/Pattern';
  -// import LRU from '../../core/LRU';
  import {createOrUpdateImage} from '../../graphic/helper/image';
  import WeakMap from '../../core/WeakMap';
  @@ -218,9 +217,6 @@ export default class PatternManager extends Definable {
  }
  -
  -// const patternSizeCache = new LRU<CachedImageObj>(50);
  -
  type CachedImageObj = {
  width: number,
  height: number
  