更新前端静态网页获取方式，放弃使用后端获取api

frontend/node_modules/svgo/plugins/removeMetadata.js

@@ -0,0 +1,23 @@
+'use strict';
+
+exports.type = 'perItem';
+
+exports.active = true;
+
+exports.description = 'removes <metadata>';
+
+/**
+ * Remove <metadata>.
+ *
+ * http://www.w3.org/TR/SVG/metadata.html
+ *
+ * @param {Object} item current iteration item
+ * @return {Boolean} if false, item will be filtered out
+ *
+ * @author Kir Belevich
+ */
+exports.fn = function(item) {
+
+    return !item.isElem('metadata');
+
+};