TF-2241 Delete old language subtitle

(cherry picked from commit 8eb7ea5f55bcf73637b4d7af4c6301f41485c62c)

lib/l10n/intl_ar.arb

@@ -1907,12 +1907,6 @@
     "placeholders_order": [],
     "placeholders": {}
   },
-  "languageAndRegionSubtitle": "قم بتعيين اللغة والمنطقة الزمنية وتنسيق الوقت الذي تستخدمه في Twake Mail.",
-  "@languageAndRegionSubtitle": {
-    "type": "text",
-    "placeholders_order": [],
-    "placeholders": {}
-  },
   "insertImage": "إدراج صورة",
   "@insertImage": {
     "type": "text",

lib/l10n/intl_it.arb

@@ -1419,12 +1419,6 @@
     "placeholders_order": [],
     "placeholders": {}
   },
-  "languageAndRegionSubtitle": "Imposta la lingua, il fuso orario, il formato dell'ora che usi su Twake Mail.",
-  "@languageAndRegionSubtitle": {
-    "type": "text",
-    "placeholders_order": [],
-    "placeholders": {}
-  },
   "language": "Lingua",
   "@language": {
     "type": "text",

lib/l10n/intl_ru.arb

@@ -1390,12 +1390,6 @@
     "placeholders_order": [],
     "placeholders": {}
   },
-  "languageAndRegionSubtitle": "Установите язык, часовой пояс и формат времени, который вы используете в Twake Mail.",
-  "@languageAndRegionSubtitle": {
-    "type": "text",
-    "placeholders_order": [],
-    "placeholders": {}
-  },
   "language": "Язык",
   "@language": {
     "type": "text",