Merge pull request #234 from alcaeus/remove-unsupported-phpunit-config-attribute

Remove unsupported phpunit config attribute

phpunit.xml.dist

@@ -7,7 +7,6 @@
          convertNoticesToExceptions="true"
          convertWarningsToExceptions="true"
          stopOnFailure="false"
-         syntaxCheck="false"
 >
     <php>
         <!-- Disable deprecation warnings -->