Revert "forced UTF-8 encoding of md5 for integrity_yaml"
Revert "forced UTF-8 encoding of md5 for integrity_yaml"

This reverts commit dedeec20f677c3442b9a089c3bc3bd6f655f90af.

boutil/pdf-reader,gordonbisnor/pdf-reader,tdenovan/pdf-reader,yob/pdf-reader,tardate/pdf-reader,nifarius/pdf-reader,yob/pdf-reader,eitoball/pdf-reader,yob/pdf-reader