adjust svgo config, fixes #2123

Closes #2123

Merge request studip/studip!1378

config/svgo.config.js

 module.exports = {
     "multipass": true,
     "plugins": [
-        {
-            "name": 'removeAttrs',
-            "params": { attrs: 'id' }
-        },
         {
             "name": 'inlineStyles',
             "params": {