diff --git a/manifest.json-E b/manifest.json-E
deleted file mode 100644
index a0705b5c74..0000000000
--- a/manifest.json-E
+++ /dev/null
@@ -1,34 +0,0 @@
-{
-  "description": "Backend.AI Web UI",
-  "manifest_version": 8,
-  "name": "Backend.AI Web UI",
-  "short_name": "BackendAIWebUI",
-  "version": "23.03.0",
-  "start_url": "/",
-  "display": "standalone",
-  "background_color": "#fff",
-  "theme_color": "#fff",
-  "icons": [
-    {
-      "src": "./manifest/backend-ai.iconset/icon_16x16@2x.png",
-      "sizes": "16x16",
-      "type": "image/png"
-    },
-    {
-      "src": "./manifest/backend-ai.iconset/icon_32x32@2x.png",
-    "sizes": "32x32",
-    "type": "image/png"
-  }, {
-    "src": "./manifest/backend-ai.iconset/icon_128x128@2x.png",
-    "sizes": "128x128",
-    "type": "image/png"
-  }, {
-    "src": "./manifest/backend-ai.iconset/icon_256x256@2x.png",
-    "sizes": "256x256",
-    "type": "image/png"
-  }, {
-    "src": "./manifest/backend-ai.iconset/icon_512x512@2x.png",
-    "sizes": "512x512",
-    "type": "image/png"
-  }]
-}