removed env variables from dist file

Author: transistive

phpunit.dist.xml

@@ -13,10 +13,5 @@
         <log type="testdox" target="php://stdout" />
     </logging>
 -->
-    <php>
-        <env name="NEO4J_ADDRESS" value="$_ENV['NEO4J_ADDRESS']" />
-        <env name="NEO4J_USERNAME" value="$_ENV['NEO4J_USERNAME']" />
-        <env name="NEO4J_PASSWORD" value="$_ENV['NEO4J_PASSWORD']" />
-    </php>
     <!-- No need to set sensitive information here -->
 </phpunit>