build: remove vite base_url used for testing

vite.config.ts

@@ -1,15 +1,8 @@
 import react from '@vitejs/plugin-react'
-import { defineConfig, loadEnv } from 'vite'
+import { defineConfig } from 'vite'
 import tsconfigPaths from 'vite-tsconfig-paths'
 
 // https://vitejs.dev/config/
-export default defineConfig(({ mode }) => {
-  // Load env file based
-  // Set the third parameter to '' to load all env regardless of the `VITE_` prefix.
-  const env = loadEnv(mode, process.cwd(), '')
-  return {
-    // vite config
-    plugins: [react(), tsconfigPaths()],
-    ...(env.VITE_BASE_URL ? { base: env.VITE_BASE_URL } : {})
-  }
+export default defineConfig({
+  plugins: [react(), tsconfigPaths()]
 })