remove dead code

Author: Kriechi

MANIFEST.in

@@ -5,6 +5,5 @@ graft visualizer
 graft examples
 prune docs/build
 recursive-include examples *.py *.crt *.key *.pem *.csr
-recursive-include utils *.sh
 include README.rst LICENSE CHANGELOG.rst tox.ini Makefile
 global-exclude *.pyc *.pyo *.swo *.swp *.map *.yml *.DS_Store