Issue 6532 - Removes required subscription title input field

locale/en_GB/desktop-options.json

 {
   "options_acceptableAds_ads_description_1": {
     "message": "Acceptable Ads are not annoying and do not interfere with the content you are viewing. <a>Read more about the Acceptable Ads criteria</a>"
   },
   "options_acceptableAds_ads_label": {
     "message": "Allow Acceptable Ads"
   },
   "options_acceptableAds_description": {
     "message": "Acceptable Ads are nonintrusive ads. They are the middle ground between ad blocking and supporting online content because they generate revenue for website owners."
   },
@@ skipping 95 matching lines @@
         "example": "2.6.7"
       }
     }
   },
   "options_dialog_import_subscription_location": {
     "message": "Filter list URL"
   },
   "options_dialog_import_subscription_location_error": {
     "message": "Enter a valid URL"
   },
-  "options_dialog_import_subscription_title": {
-    "message": "Filter list name"
-  },
-  "options_dialog_import_subscription_title_error": {
-    "message": "Please fill out the field"
-  },
   "options_dialog_import_title": {
     "message": "Add a filter list"
   },
   "options_dialog_language_other_empty": {
     "message": "There are no available languages."
   },
   "options_dialog_language_title": {
     "message": "Select a language"
   },
   "options_dialog_predefined_confirm": {
@@ skipping 182 matching lines @@
   "options_whitelist_placeholder_example": {
     "message": "e.g. $domain$",
     "placeholders": {
       "domain": {
         "content": "$1",
         "example": "www.example.com"
       }
     }
   }
 }