Revert "Read external rdfa data"
Revert "Read external rdfa data"

dunglas/php-schema,DarkGigaByte/schema-generator,DarkGigaByte/schema-generator,dunglas/php-schema,restotelry/schema-generator,dunglas/php-schema,restotelry/schema-generator,api-platform/schema-generator,api-platform/schema-generator,restotelry/schema-generator,DarkGigaByte/schema-generator