feat: remove ffaker
removing ffaker because faker is maintained again and does not contain Gaylord
https://github.com/faker-ruby/faker/commit/f094e2bfe437700335a6ec8f9d7340968283f350
removing ffaker because faker is maintained again and does not contain Gaylord
https://github.com/faker-ruby/faker/commit/f094e2bfe437700335a6ec8f9d7340968283f350