fix icon test failure

Author: vursen

packages/icon/src/vaadin-icon-styles.js

@@ -8,8 +8,6 @@ import { css } from '@vaadin/vaadin-themable-mixin/vaadin-themable-mixin.js';
 export const iconStyles = css`
   :host {
     display: inline-flex;
-    justify-content: center;
-    align-items: center;
     box-sizing: border-box;
     vertical-align: middle;
     width: 24px;