Remove different URL for EE

This can now be achieved by setting `appstoreenabled` to `false` in config.php

lib/private/ocsclient.php

@@ -36,13 +36,7 @@ class OC_OCSClient{
 	 * to set it in the config file or it will fallback to the default
 	 */
 	private static function getAppStoreURL() {
-		if(OC_Util::getEditionString()===''){
-			$default='https://api.owncloud.com/v1';
-		}else{
-			$default='';
-		}
-		$url = OC_Config::getValue('appstoreurl', $default);
-		return($url);
+		return \OC::$server->getConfig()->getSystemValue('appstoreurl', 'https://api.owncloud.com/v1');
 	}