Minor tweaks.

rollup.config.js

@@ -1,6 +1,5 @@
 import 'dotenv/config';
 import buble from '@rollup/plugin-buble';
-import replace from '@rollup/plugin-replace';
 import { nodeResolve } from '@rollup/plugin-node-resolve';
 import { terser } from 'rollup-plugin-terser';
 
@@ -10,12 +9,5 @@ export default {
     file: 'public/umami.js',
     format: 'iife',
   },
-  plugins: [
-    replace({
-      'process.env.UMAMI_URL': JSON.stringify(process.env.UMAMI_URL),
-    }),
-    nodeResolve(),
-    buble(),
-    terser({ compress: { evaluate: false } }),
-  ],
+  plugins: [nodeResolve(), buble(), terser({ compress: { evaluate: false } })],
 };