Revert "[feat] improve custom icon build script with TypeScript and error handling (#5202)"

This reverts commit 7d6e252814.

build/customIconCollection.js

@@ -0,0 +1,29 @@
+import { readFileSync, readdirSync } from 'fs'
+import { join } from 'path'
+import { dirname } from 'path'
+import { fileURLToPath } from 'url'
+
+const fileName = fileURLToPath(import.meta.url)
+const dirName = dirname(fileName)
+const customIconsPath = join(dirName, '..', 'src', 'assets', 'icons', 'custom')
+
+// Create an Iconify collection for custom icons
+export const iconCollection = {
+  prefix: 'comfy',
+  icons: {},
+  width: 16,
+  height: 16
+}
+
+// Read all SVG files from the custom icons directory
+const files = readdirSync(customIconsPath)
+files.forEach((file) => {
+  if (file.endsWith('.svg')) {
+    const name = file.replace('.svg', '')
+    const content = readFileSync(join(customIconsPath, file), 'utf-8')
+
+    iconCollection.icons[name] = {
+      body: content
+    }
+  }
+})