deleted old 3 files from the repo

[molitona]

hello, why this 3 files got deleted from the repo ?

[reewardius]

I don't think it's necessary to keep them here, you can find these files on github yourself, and the normalization.txt file has lost its relevance as a file, in the readme you can find examples of how to create your own normalization.txt and use it in your projects.