chore: 去掉ie6-8字体支持

src/less/image.less

@@ -333,7 +333,7 @@
   @font-face {
     font-family: "@{name}";
     src: url('@{fontUrl}iconfont.eot');
-    src: url('@{fontUrl}iconfont.eot?#iefix') format('embedded-opentype'), /* IE6-IE8 */ url('@{fontUrl}iconfont.woff') format('woff'), /* chrome、firefox */ url('@{fontUrl}iconfont.ttf') format('truetype'), /* chrome、firefox、opera、Safari, Android, iOS 4.2+*/ url('@{fontUrl}iconfont.svg#svgFontName') format('svg'); /*  iOS 4.1- */
+    src: url('@{fontUrl}iconfont.woff') format('woff'), /* chrome、firefox */ url('@{fontUrl}iconfont.ttf') format('truetype'), /* chrome、firefox、opera、Safari, Android, iOS 4.2+*/ url('@{fontUrl}iconfont.svg#svgFontName') format('svg'); /*  iOS 4.1- */
   }
 }