graphQl: fixed composer json

Author: vitaliyboyko

app/code/Magento/QuoteGraphQl/composer.json

@@ -9,7 +9,6 @@
         "magento/module-checkout": "*",
         "magento/module-catalog": "*",
         "magento/module-store": "*",
-        "magento/module-checkout": "*",
         "magento/module-customer": "*",
         "magento/module-authorization": "*"
     },