Removed an unused variable

Author: waltertamboer

src/Bootstrap.php

@@ -57,7 +57,7 @@ private static function buildApplication(): Application
  self::dropTables($entityManager);
 
  echo "Creating all tables\n";
- self::createSchema($entityManager);
+ self::createSchema();
 
  echo "Initializing database content\n";
  self::initDatabase($serviceManager, $entityManager);