fix: don't require build.tailwind.css in postcss filter

src/generators/postcss.js

@@ -1,4 +1,3 @@
-const path = require('path')
 const {get} = require('lodash')
 const postcss = require('postcss')
 const postcssImport = require('postcss-import')
@@ -7,10 +6,8 @@ const mergeLonghand = require('postcss-merge-longhand')
 
 module.exports = {
   process: async (css = '', maizzleConfig = {}) => {
-    const userFilePath = get(maizzleConfig, 'build.tailwind.css', path.join(process.cwd(), 'src/css/tailwind.css'))
-
     return postcss([
-      postcssImport({path: path.dirname(userFilePath)}),
+      postcssImport(),
       postcssNested(),
       maizzleConfig.env === 'local' ? () => {} : mergeLonghand(),
       ...get(maizzleConfig, 'build.postcss.plugins', [])