Testing: remove deprecated attribute

Author: Luis

phpunit.xml.dist

@@ -3,8 +3,7 @@
 <phpunit bootstrap="tests/bootstrap.php" colors="true"
          beStrictAboutTestsThatDoNotTestAnything="true"
          beStrictAboutOutputDuringTests="true"
-         beStrictAboutChangesToGlobalState="true"
-         checkForUnintentionallyCoveredCode="false">
+         beStrictAboutChangesToGlobalState="true">
   <filter>
     <whitelist>
       <directory suffix=".php">../modules/graphql</directory>