MAGETWO-96107: Additional blank option in country dropdown

- Delete blank line for single country

Author: YuliyaLabudova

app/code/Magento/Directory/Model/ResourceModel/Country/Collection.php

@@ -205,6 +205,7 @@ public function getItemById($countryId)
 
     /**
      * Add filter by country code to collection.
+     *
      * $countryCode can be either array of country codes or string representing one country code.
      * $iso can be either array containing 'iso2', 'iso3' values or string with containing one of that values directly.
      * The collection will contain countries where at least one of contry $iso fields matches $countryCode.
@@ -297,7 +298,7 @@ public function toOptionArray($emptyLabel = ' ')
             }
             $options[] = $option;
         }
-        if ($emptyLabel !== false && count($options) > 0) {
+        if ($emptyLabel !== false && count($options) > 1) {
             array_unshift($options, ['value' => '', 'label' => $emptyLabel]);
         }