remove JsonvatClient as jsonvat.com is discontinued, see adamcooke/vat-rates@c4f6965

Author: dannyvankooten

README.md

@@ -9,7 +9,7 @@ ibericode/vat
 
 This is a simple PHP library to help you deal with Europe's VAT rules. 
 
-- Fetch VAT rates for any EU member state using [ibericode/vat-rates](https://github.com/ibericode/vat-rates) or [jsonvat.com](https://jsonvat.com/)
+- Fetch VAT rates for any EU member state using [ibericode/vat-rates](https://github.com/ibericode/vat-rates).
 - Validate VAT numbers (by format and/or [existence](http://ec.europa.eu/taxation_customs/vies/))
 - Validate ISO-3316 alpha-2 country codes
 - Determine whether a country is part of the EU