Removes Vietnamese VNI input method.

chrome/browser/resources/chromeos/input_method/google_input_tools_manifest.json

 {
   "key": "MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQDyRb75ZzKuseD4ZEposVSGTJQjdySVjVA0s2hgFYDJ3hRh5wATyWsLL7EYvbfi2K+hbYBvrxOQYot4eArQloShy4tdQTZovmTXIINIOzN3j/avFfrYSnJNV6C6gpGKglGVEw/lhf+6WdSnGoWjqXWQnnJltc2JtiAk51nkFJUWZwIDAQAB",
   "name": "__MSG_chos_inputtool_title__",
   "version": "4.3.2.3",
   "description": "The Google Input Tools",
   "default_locale": "en",
   "incognito": "split",
   "permissions": [
     "accessibilityFeatures.read",
     "app.window.alpha",
@@ skipping 650 matching lines @@
       "description": "",
       "language": [
         "vi"
       ],
       "layouts": [
         "us"
       ],
       "input_view": "inputview.html#id=m17n:vi_viqr&language=vi&passwordLayout=us-ltr&name=keyboard_vietnamese_viqr"
     },
     {
-      "name": "__MSG_keyboard_vietnamese_vni__",
-      "type": "ime",
-      "id": "vkd_vi_vni",
-      "description": "",
-      "language": [
-        "vi"
-      ],
-      "layouts": [
-        "us"
-      ],
-      "input_view": "inputview.html#id=m17n:vi_vni&language=vi&passwordLayout=us-ltr&name=keyboard_vietnamese_vni"
-    },
-    {
       "name": "__MSG_keyboard_arabic__",
       "type": "ime",
       "id": "vkd_ar",
       "description": "",
       "language": [
         "ar"
       ],
       "layouts": [
         "us"
       ],
@@ skipping 138 matching lines @@
         "ru"
       ],
       "layouts": [
         "us"
       ],
       "input_view": "inputview.html#id=m17n:ru_phone_yazhert&language=ru&passwordLayout=us-ltr&name=keyboard_russian_phonetic_yazhert"
     }
   ],
   "manifest_version": 2
 }