Delete .ksy repositories
Can the .ksy repositories be deleted?

- [edid.ksy](https://github.com/kaitai-io/edid.ksy)
- [windows_resource_file.ksy](https://github.com/kaitai-io/windows_resource_file.ksy)
- [dicom.ksy](https://github.com/kaitai-io/dicom.ksy)
- [java_bytecode.ksy](https://github.com/kaitai-io/java_bytecode.ksy)

The first three repositories are part of [kaitai_struct_formats](https://github.com/kaitai-io/kaitai_struct_formats). java_bytecode.ksy could be included there as well.