Issue 6532 - Removes required subscription title input field

locale/en_US/desktop-options.json

 {
   "options_page_document_title": {
     "description": "Options page title",
     "message": "Adblock Plus Options"
   },
   "options_page_title": {
     "description": "Page title in navigation sidebar",
     "message": "Settings"
   },
   "options_tab_general": {
@@ skipping 397 matching lines @@
     "message": "Are you sure you want to add this filter list?"
   },
   "options_dialog_import_title": {
     "description": "Title of 'Add a filter list' dialog",
     "message": "Add a filter list"
   },
   "options_close": {
     "description": "Close modal button",
     "message": "close"
   },
-  "options_dialog_import_subscription_title": {
-    "description": "Input label in 'Add a filter list' dialog",
-    "message": "Filter list name"
-  },
-  "options_dialog_import_subscription_title_error": {
-    "description": "Error message of 'Filter list name' input in 'Add a filter list' dialog",
-    "message": "Please fill out the field"
-  },
   "options_dialog_import_subscription_location": {
     "description": "Input label in 'Add a filter list' dialog",
     "message": "Filter list URL"
   },
   "options_dialog_import_subscription_location_error": {
     "description": "Error message of 'Filter list URL' input in 'Add a filter list' dialog",
     "message": "Enter a valid URL"
   },
-   "options_dialog_language_title": {
+  "options_dialog_language_title": {
     "description": "Title of lanugage modal dialog",
     "message": "Select a language"
   },
   "options_dialog_language_other_empty": {
     "description": "Text shown when list of available languages is empty",
     "message": "There are no available languages."
   },
   "options_whitelist_notification": {
     "description": "Notification that is shown after a new website is whitelisted",
     "message": "\"$website$\" has been whitelisted.",
     "placeholders": {
       "website": {
         "content": "$1",
         "example": "example.com"
       }
     }
   },
   "options_notification_hide": {
     "description": "Hidden text attached to the close button for screen readers of Notification",
     "message": "Close notification"
   }
 }