chore: remove ignored files from tracking

frontend/node_modules/css-tree/cjs/syntax/atrule/index.cjs

@@ -1,19 +0,0 @@
-'use strict';
-
-const fontFace = require('./font-face.cjs');
-const _import = require('./import.cjs');
-const media = require('./media.cjs');
-const nest = require('./nest.cjs');
-const page = require('./page.cjs');
-const supports = require('./supports.cjs');
-
-const atrule = {
-    'font-face': fontFace,
-    'import': _import,
-    media,
-    nest,
-    page,
-    supports
-};
-
-module.exports = atrule;