Resolve Redundant dependencies found in static test

There was 1 failure:
1) Magento\Test\Integrity\DependencyTest::testRedundant
Redundant dependencies found!
Module Magento\VaultGraphQl: hard [Magento\GraphQl]

Author: pmclain

app/code/Magento/VaultGraphQl/composer.json

@@ -5,7 +5,6 @@
     "require": {
         "php": "~7.1.3||~7.2.0",
         "magento/framework": "*",
-        "magento/module-graph-ql": "*",
         "magento/module-vault": "*",
         "magento/module-customer-graph-ql": "*"
     },